Finding the Fourth Proportional to 115,357.68, 159,188.68 and 65,061.36

Step by Step Solution

1. Step 1: Write the proportion equation
   115,357.68 : 159,188.68 = 65,061.36 : x
2. Step 2: Convert to fraction form
   115,357.68/159,188.68 = 65,061.36/x
3. Step 3: Cross multiply
   115,357.68x = 159,188.68 × 65,061.36
4. Step 4: Simplify right side
   115,357.68x = 10,357,032,017.40
5. Step 5: Solve for x
   x = 10,357,032,017.40/115,357.68
6. Step 6: Final answer
   x = 89,781.90