Finding the Fourth Proportional to 90,162.55, 124,428.86 and 54,364.10

Step by Step Solution

1. Step 1: Write the proportion equation
   90,162.55 : 124,428.86 = 54,364.10 : x
2. Step 2: Convert to fraction form
   90,162.55/124,428.86 = 54,364.10/x
3. Step 3: Cross multiply
   90,162.55x = 124,428.86 × 54,364.10
4. Step 4: Simplify right side
   90,162.55x = 6,764,462,297.83
5. Step 5: Solve for x
   x = 6,764,462,297.83/90,162.55
6. Step 6: Final answer
   x = 75,025.19