Finding the Fourth Proportional to 74,662.28, 103,016.24 and 42,389.88

Step by Step Solution

1. Step 1: Write the proportion equation
   74,662.28 : 103,016.24 = 42,389.88 : x
2. Step 2: Convert to fraction form
   74,662.28/103,016.24 = 42,389.88/x
3. Step 3: Cross multiply
   74,662.28x = 103,016.24 × 42,389.88
4. Step 4: Simplify right side
   74,662.28x = 4,366,846,051.65
5. Step 5: Solve for x
   x = 4,366,846,051.65/74,662.28
6. Step 6: Final answer
   x = 58,487.98