Finding the Fourth Proportional to 113,565,123.36, 156,719,943.72 and 61,354,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,565,123.36 : 156,719,943.72 = 61,354,128.78 : x
2. Step 2: Convert to fraction form
   113,565,123.36/156,719,943.72 = 61,354,128.78/x
3. Step 3: Cross multiply
   113,565,123.36x = 156,719,943.72 × 61,354,128.78
4. Step 4: Simplify right side
   113,565,123.36x = 9,615,415,609,391,232
5. Step 5: Solve for x
   x = 9,615,415,609,391,232/113,565,123.36
6. Step 6: Final answer
   x = 84,668,737.42