Finding the Fourth Proportional to 261,721,359,518.17, 392,701,323,368.76 and 134,325,514,077.25

Step by Step Solution

1. Step 1: Write the proportion equation
   261,721,359,518.17 : 392,701,323,368.76 = 134,325,514,077.25 : x
2. Step 2: Convert to fraction form
   261,721,359,518.17/392,701,323,368.76 = 134,325,514,077.25/x
3. Step 3: Cross multiply
   261,721,359,518.17x = 392,701,323,368.76 × 134,325,514,077.25
4. Step 4: Simplify right side
   261,721,359,518.17x = 52,749,807,140,325,073,879,040
5. Step 5: Solve for x
   x = 52,749,807,140,325,073,879,040/261,721,359,518.17
6. Step 6: Final answer
   x = 201,549,492,320.53