Finding the Fourth Proportional to 113,333.31, 156,406.59 and 65,603.25

Step by Step Solution

1. Step 1: Write the proportion equation
   113,333.31 : 156,406.59 = 65,603.25 : x
2. Step 2: Convert to fraction form
   113,333.31/156,406.59 = 65,603.25/x
3. Step 3: Cross multiply
   113,333.31x = 156,406.59 × 65,603.25
4. Step 4: Simplify right side
   113,333.31x = 10,260,780,625.42
5. Step 5: Solve for x
   x = 10,260,780,625.42/113,333.31
6. Step 6: Final answer
   x = 90,536.32