Finding the Fourth Proportional to 92,872.76, 139,332.69 and 42,988.77

Step by Step Solution

1. Step 1: Write the proportion equation
   92,872.76 : 139,332.69 = 42,988.77 : x
2. Step 2: Convert to fraction form
   92,872.76/139,332.69 = 42,988.77/x
3. Step 3: Cross multiply
   92,872.76x = 139,332.69 × 42,988.77
4. Step 4: Simplify right side
   92,872.76x = 5,989,740,963.89
5. Step 5: Solve for x
   x = 5,989,740,963.89/92,872.76
6. Step 6: Final answer
   x = 64,494.06