Finding the Fourth Proportional to 115,189.43, 158,963.00 and 64,200.74

Step by Step Solution

1. Step 1: Write the proportion equation
   115,189.43 : 158,963.00 = 64,200.74 : x
2. Step 2: Convert to fraction form
   115,189.43/158,963.00 = 64,200.74/x
3. Step 3: Cross multiply
   115,189.43x = 158,963.00 × 64,200.74
4. Step 4: Simplify right side
   115,189.43x = 10,205,541,116.80
5. Step 5: Solve for x
   x = 10,205,541,116.80/115,189.43
6. Step 6: Final answer
   x = 88,597.90