Finding the Fourth Proportional to 90,404.58, 124,758.18 and 54,587.58

Step by Step Solution

1. Step 1: Write the proportion equation
   90,404.58 : 124,758.18 = 54,587.58 : x
2. Step 2: Convert to fraction form
   90,404.58/124,758.18 = 54,587.58/x
3. Step 3: Cross multiply
   90,404.58x = 124,758.18 × 54,587.58
4. Step 4: Simplify right side
   90,404.58x = 6,810,247,131.40
5. Step 5: Solve for x
   x = 6,810,247,131.40/90,404.58
6. Step 6: Final answer
   x = 75,330.78