Finding the Fourth Proportional to 59,521.43, 89,238.38 and 28,378.55

Step by Step Solution

1. Step 1: Write the proportion equation
   59,521.43 : 89,238.38 = 28,378.55 : x
2. Step 2: Convert to fraction form
   59,521.43/89,238.38 = 28,378.55/x
3. Step 3: Cross multiply
   59,521.43x = 89,238.38 × 28,378.55
4. Step 4: Simplify right side
   59,521.43x = 2,532,455,909.95
5. Step 5: Solve for x
   x = 2,532,455,909.95/59,521.43
6. Step 6: Final answer
   x = 42,546.96