Finding the Fourth Proportional to 78,609.62, 108,477.88 and 42,799.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,609.62 : 108,477.88 = 42,799.76 : x
2. Step 2: Convert to fraction form
   78,609.62/108,477.88 = 42,799.76/x
3. Step 3: Cross multiply
   78,609.62x = 108,477.88 × 42,799.76
4. Step 4: Simplify right side
   78,609.62x = 4,642,827,229.31
5. Step 5: Solve for x
   x = 4,642,827,229.31/78,609.62
6. Step 6: Final answer
   x = 59,061.82