Finding the Fourth Proportional to 90,499.50, 135,527.72 and 63,779.82

Step by Step Solution

1. Step 1: Write the proportion equation
   90,499.50 : 135,527.72 = 63,779.82 : x
2. Step 2: Convert to fraction form
   90,499.50/135,527.72 = 63,779.82/x
3. Step 3: Cross multiply
   90,499.50x = 135,527.72 × 63,779.82
4. Step 4: Simplify right side
   90,499.50x = 8,643,933,586.61
5. Step 5: Solve for x
   x = 8,643,933,586.61/90,499.50
6. Step 6: Final answer
   x = 95,513.61