Finding the Fourth Proportional to 64,433.86, 89,003.88 and 53,713.74

Step by Step Solution

1. Step 1: Write the proportion equation
   64,433.86 : 89,003.88 = 53,713.74 : x
2. Step 2: Convert to fraction form
   64,433.86/89,003.88 = 53,713.74/x
3. Step 3: Cross multiply
   64,433.86x = 89,003.88 × 53,713.74
4. Step 4: Simplify right side
   64,433.86x = 4,780,731,269.31
5. Step 5: Solve for x
   x = 4,780,731,269.31/64,433.86
6. Step 6: Final answer
   x = 74,195.95