Finding the Fourth Proportional to 113,487.14, 156,561.05 and 77,144.06

Step by Step Solution

1. Step 1: Write the proportion equation
   113,487.14 : 156,561.05 = 77,144.06 : x
2. Step 2: Convert to fraction form
   113,487.14/156,561.05 = 77,144.06/x
3. Step 3: Cross multiply
   113,487.14x = 156,561.05 × 77,144.06
4. Step 4: Simplify right side
   113,487.14x = 12,077,755,034.86
5. Step 5: Solve for x
   x = 12,077,755,034.86/113,487.14
6. Step 6: Final answer
   x = 106,424.00