Finding the Fourth Proportional to 64,818.53, 89,490.85 and 52,910.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,818.53 : 89,490.85 = 52,910.18 : x
2. Step 2: Convert to fraction form
   64,818.53/89,490.85 = 52,910.18/x
3. Step 3: Cross multiply
   64,818.53x = 89,490.85 × 52,910.18
4. Step 4: Simplify right side
   64,818.53x = 4,734,976,534.40
5. Step 5: Solve for x
   x = 4,734,976,534.40/64,818.53
6. Step 6: Final answer
   x = 73,049.74