Finding the Fourth Proportional to 115,710.68, 159,695.52 and 64,726.25

Step by Step Solution

1. Step 1: Write the proportion equation
   115,710.68 : 159,695.52 = 64,726.25 : x
2. Step 2: Convert to fraction form
   115,710.68/159,695.52 = 64,726.25/x
3. Step 3: Cross multiply
   115,710.68x = 159,695.52 × 64,726.25
4. Step 4: Simplify right side
   115,710.68x = 10,336,492,151.40
5. Step 5: Solve for x
   x = 10,336,492,151.40/115,710.68
6. Step 6: Final answer
   x = 89,330.49