Finding the Fourth Proportional to 64,941.89, 89,661.15 and 53,033.68

Step by Step Solution

1. Step 1: Write the proportion equation
   64,941.89 : 89,661.15 = 53,033.68 : x
2. Step 2: Convert to fraction form
   64,941.89/89,661.15 = 53,033.68/x
3. Step 3: Cross multiply
   64,941.89x = 89,661.15 × 53,033.68
4. Step 4: Simplify right side
   64,941.89x = 4,755,060,737.53
5. Step 5: Solve for x
   x = 4,755,060,737.53/64,941.89
6. Step 6: Final answer
   x = 73,220.24