Finding the Fourth Proportional to 64,872.34, 89,530.04 and 40,677.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,872.34 : 89,530.04 = 40,677.16 : x
2. Step 2: Convert to fraction form
   64,872.34/89,530.04 = 40,677.16/x
3. Step 3: Cross multiply
   64,872.34x = 89,530.04 × 40,677.16
4. Step 4: Simplify right side
   64,872.34x = 3,641,827,761.89
5. Step 5: Solve for x
   x = 3,641,827,761.89/64,872.34
6. Step 6: Final answer
   x = 56,138.38