Finding the Fourth Proportional to 268,488.88, 402,720.56 and 78,941.59

Step by Step Solution

1. Step 1: Write the proportion equation
   268,488.88 : 402,720.56 = 78,941.59 : x
2. Step 2: Convert to fraction form
   268,488.88/402,720.56 = 78,941.59/x
3. Step 3: Cross multiply
   268,488.88x = 402,720.56 × 78,941.59
4. Step 4: Simplify right side
   268,488.88x = 31,791,400,226.61
5. Step 5: Solve for x
   x = 31,791,400,226.61/268,488.88
6. Step 6: Final answer
   x = 118,408.63