Finding the Fourth Proportional to 90,483.21, 124,870.17 and 54,666.29

Step by Step Solution

1. Step 1: Write the proportion equation
   90,483.21 : 124,870.17 = 54,666.29 : x
2. Step 2: Convert to fraction form
   90,483.21/124,870.17 = 54,666.29/x
3. Step 3: Cross multiply
   90,483.21x = 124,870.17 × 54,666.29
4. Step 4: Simplify right side
   90,483.21x = 6,826,189,442.74
5. Step 5: Solve for x
   x = 6,826,189,442.74/90,483.21
6. Step 6: Final answer
   x = 75,441.50