Finding the Fourth Proportional to 78,718,632.70, 118,112,051.85 and 42,284,514.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,718,632.70 : 118,112,051.85 = 42,284,514.10 : x
2. Step 2: Convert to fraction form
   78,718,632.70/118,112,051.85 = 42,284,514.10/x
3. Step 3: Cross multiply
   78,718,632.70x = 118,112,051.85 × 42,284,514.10
4. Step 4: Simplify right side
   78,718,632.70x = 4,994,310,721,831,256
5. Step 5: Solve for x
   x = 4,994,310,721,831,256/78,718,632.70
6. Step 6: Final answer
   x = 63,445,089.82