Finding the Fourth Proportional to 85,758.64, 118,348.18 and 49,947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,758.64 : 118,348.18 = 49,947.72 : x
2. Step 2: Convert to fraction form
   85,758.64/118,348.18 = 49,947.72/x
3. Step 3: Cross multiply
   85,758.64x = 118,348.18 × 49,947.72
4. Step 4: Simplify right side
   85,758.64x = 5,911,221,757.15
5. Step 5: Solve for x
   x = 5,911,221,757.15/85,758.64
6. Step 6: Final answer
   x = 68,928.59