Finding the Fourth Proportional to 90,061.56, 124,283.70 and 49,779.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,061.56 : 124,283.70 = 49,779.72 : x
2. Step 2: Convert to fraction form
   90,061.56/124,283.70 = 49,779.72/x
3. Step 3: Cross multiply
   90,061.56x = 124,283.70 × 49,779.72
4. Step 4: Simplify right side
   90,061.56x = 6,186,807,786.56
5. Step 5: Solve for x
   x = 6,186,807,786.56/90,061.56
6. Step 6: Final answer
   x = 68,695.32