Finding the Fourth Proportional to 74,879, 112,287.30 and 30,475.61

Step by Step Solution

1. Step 1: Write the proportion equation
   74,879 : 112,287.30 = 30,475.61 : x
2. Step 2: Convert to fraction form
   74,879/112,287.30 = 30,475.61/x
3. Step 3: Cross multiply
   74,879x = 112,287.30 × 30,475.61
4. Step 4: Simplify right side
   74,879x = 3,422,023,962.75
5. Step 5: Solve for x
   x = 3,422,023,962.75/74,879
6. Step 6: Final answer
   x = 45,700.72