Finding the Fourth Proportional to 113,521.72, 156,687.06 and 65,801.38

Step by Step Solution

1. Step 1: Write the proportion equation
   113,521.72 : 156,687.06 = 65,801.38 : x
2. Step 2: Convert to fraction form
   113,521.72/156,687.06 = 65,801.38/x
3. Step 3: Cross multiply
   113,521.72x = 156,687.06 × 65,801.38
4. Step 4: Simplify right side
   113,521.72x = 10,310,224,776.14
5. Step 5: Solve for x
   x = 10,310,224,776.14/113,521.72
6. Step 6: Final answer
   x = 90,821.60