Finding the Fourth Proportional to 113,477.86, 156,575.71 and 65,728.36

Step by Step Solution

1. Step 1: Write the proportion equation
   113,477.86 : 156,575.71 = 65,728.36 : x
2. Step 2: Convert to fraction form
   113,477.86/156,575.71 = 65,728.36/x
3. Step 3: Cross multiply
   113,477.86x = 156,575.71 × 65,728.36
4. Step 4: Simplify right side
   113,477.86x = 10,291,464,634.14
5. Step 5: Solve for x
   x = 10,291,464,634.14/113,477.86
6. Step 6: Final answer
   x = 90,691.39