Finding the Fourth Proportional to 58,618.76, 80,828.48 and 42,454.10

Step by Step Solution

1. Step 1: Write the proportion equation
   58,618.76 : 80,828.48 = 42,454.10 : x
2. Step 2: Convert to fraction form
   58,618.76/80,828.48 = 42,454.10/x
3. Step 3: Cross multiply
   58,618.76x = 80,828.48 × 42,454.10
4. Step 4: Simplify right side
   58,618.76x = 3,431,500,160.50
5. Step 5: Solve for x
   x = 3,431,500,160.50/58,618.76
6. Step 6: Final answer
   x = 58,539.28