Finding the Fourth Proportional to 74,860.12, 103,300.76 and 42,586.15

Step by Step Solution

1. Step 1: Write the proportion equation
   74,860.12 : 103,300.76 = 42,586.15 : x
2. Step 2: Convert to fraction form
   74,860.12/103,300.76 = 42,586.15/x
3. Step 3: Cross multiply
   74,860.12x = 103,300.76 × 42,586.15
4. Step 4: Simplify right side
   74,860.12x = 4,399,181,660.47
5. Step 5: Solve for x
   x = 4,399,181,660.47/74,860.12
6. Step 6: Final answer
   x = 58,765.36