Finding the Fourth Proportional to 78,331.43, 108,096.63 and 42,520.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,331.43 : 108,096.63 = 42,520.67 : x
2. Step 2: Convert to fraction form
   78,331.43/108,096.63 = 42,520.67/x
3. Step 3: Cross multiply
   78,331.43x = 108,096.63 × 42,520.67
4. Step 4: Simplify right side
   78,331.43x = 4,596,341,132.34
5. Step 5: Solve for x
   x = 4,596,341,132.34/78,331.43
6. Step 6: Final answer
   x = 58,678.12