Finding the Fourth Proportional to 92,679.81, 139,061.16 and 42,733.13

Step by Step Solution

1. Step 1: Write the proportion equation
   92,679.81 : 139,061.16 = 42,733.13 : x
2. Step 2: Convert to fraction form
   92,679.81/139,061.16 = 42,733.13/x
3. Step 3: Cross multiply
   92,679.81x = 139,061.16 × 42,733.13
4. Step 4: Simplify right side
   92,679.81x = 5,942,517,932.93
5. Step 5: Solve for x
   x = 5,942,517,932.93/92,679.81
6. Step 6: Final answer
   x = 64,118.80