Finding the Fourth Proportional to 64,959.55, 89,730.25 and 52,260.58

Step by Step Solution

1. Step 1: Write the proportion equation
   64,959.55 : 89,730.25 = 52,260.58 : x
2. Step 2: Convert to fraction form
   64,959.55/89,730.25 = 52,260.58/x
3. Step 3: Cross multiply
   64,959.55x = 89,730.25 × 52,260.58
4. Step 4: Simplify right side
   64,959.55x = 4,689,354,385.32
5. Step 5: Solve for x
   x = 4,689,354,385.32/64,959.55
6. Step 6: Final answer
   x = 72,188.83