Finding the Fourth Proportional to 113,673.42, 156,865.71 and 62,688.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,673.42 : 156,865.71 = 62,688.30 : x
2. Step 2: Convert to fraction form
   113,673.42/156,865.71 = 62,688.30/x
3. Step 3: Cross multiply
   113,673.42x = 156,865.71 × 62,688.30
4. Step 4: Simplify right side
   113,673.42x = 9,833,644,688.19
5. Step 5: Solve for x
   x = 9,833,644,688.19/113,673.42
6. Step 6: Final answer
   x = 86,507.86