Finding the Fourth Proportional to 87,499.35, 120,748.86 and 49,773.60

Step by Step Solution

1. Step 1: Write the proportion equation
   87,499.35 : 120,748.86 = 49,773.60 : x
2. Step 2: Convert to fraction form
   87,499.35/120,748.86 = 49,773.60/x
3. Step 3: Cross multiply
   87,499.35x = 120,748.86 × 49,773.60
4. Step 4: Simplify right side
   87,499.35x = 6,010,105,458.10
5. Step 5: Solve for x
   x = 6,010,105,458.10/87,499.35
6. Step 6: Final answer
   x = 68,687.43