Finding the Fourth Proportional to 83,434.16, 115,155.16 and 65,248.86

Step by Step Solution

1. Step 1: Write the proportion equation
   83,434.16 : 115,155.16 = 65,248.86 : x
2. Step 2: Convert to fraction form
   83,434.16/115,155.16 = 65,248.86/x
3. Step 3: Cross multiply
   83,434.16x = 115,155.16 × 65,248.86
4. Step 4: Simplify right side
   83,434.16x = 7,513,742,913.12
5. Step 5: Solve for x
   x = 7,513,742,913.12/83,434.16
6. Step 6: Final answer
   x = 90,055.95