Finding the Fourth Proportional to 72,959.48, 109,519.86 and 52,275.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,959.48 : 109,519.86 = 52,275.32 : x
2. Step 2: Convert to fraction form
   72,959.48/109,519.86 = 52,275.32/x
3. Step 3: Cross multiply
   72,959.48x = 109,519.86 × 52,275.32
4. Step 4: Simplify right side
   72,959.48x = 5,725,185,727.86
5. Step 5: Solve for x
   x = 5,725,185,727.86/72,959.48
6. Step 6: Final answer
   x = 78,470.76