Finding the Fourth Proportional to 115,577.31, 159,499.85 and 65,276.31

Step by Step Solution

1. Step 1: Write the proportion equation
   115,577.31 : 159,499.85 = 65,276.31 : x
2. Step 2: Convert to fraction form
   115,577.31/159,499.85 = 65,276.31/x
3. Step 3: Cross multiply
   115,577.31x = 159,499.85 × 65,276.31
4. Step 4: Simplify right side
   115,577.31x = 10,411,561,327.17
5. Step 5: Solve for x
   x = 10,411,561,327.17/115,577.31
6. Step 6: Final answer
   x = 90,083.09