Finding the Fourth Proportional to 60,087.42, 90,059.31 and 28,023.30

Step by Step Solution

1. Step 1: Write the proportion equation
   60,087.42 : 90,059.31 = 28,023.30 : x
2. Step 2: Convert to fraction form
   60,087.42/90,059.31 = 28,023.30/x
3. Step 3: Cross multiply
   60,087.42x = 90,059.31 × 28,023.30
4. Step 4: Simplify right side
   60,087.42x = 2,523,759,061.92
5. Step 5: Solve for x
   x = 2,523,759,061.92/60,087.42
6. Step 6: Final answer
   x = 42,001.45