Finding the Fourth Proportional to 142,376,353.83, 213,216,264.60 and 128,574,503.01

Step by Step Solution

1. Step 1: Write the proportion equation
   142,376,353.83 : 213,216,264.60 = 128,574,503.01 : x
2. Step 2: Convert to fraction form
   142,376,353.83/213,216,264.60 = 128,574,503.01/x
3. Step 3: Cross multiply
   142,376,353.83x = 213,216,264.60 × 128,574,503.01
4. Step 4: Simplify right side
   142,376,353.83x = 27,414,175,254,111,504
5. Step 5: Solve for x
   x = 27,414,175,254,111,504/142,376,353.83
6. Step 6: Final answer
   x = 192,547,249.01