Finding the Fourth Proportional to 78,331.41, 108,099.30 and 42,521.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,331.41 : 108,099.30 = 42,521.42 : x
2. Step 2: Convert to fraction form
   78,331.41/108,099.30 = 42,521.42/x
3. Step 3: Cross multiply
   78,331.41x = 108,099.30 × 42,521.42
4. Step 4: Simplify right side
   78,331.41x = 4,596,535,737.01
5. Step 5: Solve for x
   x = 4,596,535,737.01/78,331.41
6. Step 6: Final answer
   x = 58,680.62