Finding the Fourth Proportional to 113,677.72, 156,868.86 and 62,688.76

Step by Step Solution

1. Step 1: Write the proportion equation
   113,677.72 : 156,868.86 = 62,688.76 : x
2. Step 2: Convert to fraction form
   113,677.72/156,868.86 = 62,688.76/x
3. Step 3: Cross multiply
   113,677.72x = 156,868.86 × 62,688.76
4. Step 4: Simplify right side
   113,677.72x = 9,833,914,316.01
5. Step 5: Solve for x
   x = 9,833,914,316.01/113,677.72
6. Step 6: Final answer
   x = 86,506.96