Finding the Fourth Proportional to 72,805.24, 109,151.95 and 65,387.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,805.24 : 109,151.95 = 65,387.05 : x
2. Step 2: Convert to fraction form
   72,805.24/109,151.95 = 65,387.05/x
3. Step 3: Cross multiply
   72,805.24x = 109,151.95 × 65,387.05
4. Step 4: Simplify right side
   72,805.24x = 7,137,124,012.25
5. Step 5: Solve for x
   x = 7,137,124,012.25/72,805.24
6. Step 6: Final answer
   x = 98,030.36