Finding the Fourth Proportional to 113,393.28, 156,479.52 and 65,647.44

Step by Step Solution

1. Step 1: Write the proportion equation
   113,393.28 : 156,479.52 = 65,647.44 : x
2. Step 2: Convert to fraction form
   113,393.28/156,479.52 = 65,647.44/x
3. Step 3: Cross multiply
   113,393.28x = 156,479.52 × 65,647.44
4. Step 4: Simplify right side
   113,393.28x = 10,272,479,900.43
5. Step 5: Solve for x
   x = 10,272,479,900.43/113,393.28
6. Step 6: Final answer
   x = 90,591.61