Finding the Fourth Proportional to 113,572.52, 156,748.74 and 63,287.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,572.52 : 156,748.74 = 63,287.72 : x
2. Step 2: Convert to fraction form
   113,572.52/156,748.74 = 63,287.72/x
3. Step 3: Cross multiply
   113,572.52x = 156,748.74 × 63,287.72
4. Step 4: Simplify right side
   113,572.52x = 9,920,270,367.47
5. Step 5: Solve for x
   x = 9,920,270,367.47/113,572.52
6. Step 6: Final answer
   x = 87,347.45