Finding the Fourth Proportional to 278,757.30, 418,151.79 and 79,061.88

Step by Step Solution

1. Step 1: Write the proportion equation
   278,757.30 : 418,151.79 = 79,061.88 : x
2. Step 2: Convert to fraction form
   278,757.30/418,151.79 = 79,061.88/x
3. Step 3: Cross multiply
   278,757.30x = 418,151.79 × 79,061.88
4. Step 4: Simplify right side
   278,757.30x = 33,059,866,642.77
5. Step 5: Solve for x
   x = 33,059,866,642.77/278,757.30
6. Step 6: Final answer
   x = 118,597.31