Finding the Fourth Proportional to 78,799.85, 108,744.57 and 42,989.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,799.85 : 108,744.57 = 42,989.97 : x
2. Step 2: Convert to fraction form
   78,799.85/108,744.57 = 42,989.97/x
3. Step 3: Cross multiply
   78,799.85x = 108,744.57 × 42,989.97
4. Step 4: Simplify right side
   78,799.85x = 4,674,925,801.96
5. Step 5: Solve for x
   x = 4,674,925,801.96/78,799.85
6. Step 6: Final answer
   x = 59,326.58