Finding the Fourth Proportional to 42,250.18, 58,353.10 and 28,798.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,250.18 : 58,353.10 = 28,798.30 : x
2. Step 2: Convert to fraction form
   42,250.18/58,353.10 = 28,798.30/x
3. Step 3: Cross multiply
   42,250.18x = 58,353.10 × 28,798.30
4. Step 4: Simplify right side
   42,250.18x = 1,680,470,079.73
5. Step 5: Solve for x
   x = 1,680,470,079.73/42,250.18
6. Step 6: Final answer
   x = 39,774.27