Finding the Fourth Proportional to 64,543.52, 89,072.51 and 35,865.31

Step by Step Solution

1. Step 1: Write the proportion equation
   64,543.52 : 89,072.51 = 35,865.31 : x
2. Step 2: Convert to fraction form
   64,543.52/89,072.51 = 35,865.31/x
3. Step 3: Cross multiply
   64,543.52x = 89,072.51 × 35,865.31
4. Step 4: Simplify right side
   64,543.52x = 3,194,612,899.86
5. Step 5: Solve for x
   x = 3,194,612,899.86/64,543.52
6. Step 6: Final answer
   x = 49,495.49