Finding the Fourth Proportional to 72,422.61, 99,978.18 and 48,263.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,422.61 : 99,978.18 = 48,263.79 : x
2. Step 2: Convert to fraction form
   72,422.61/99,978.18 = 48,263.79/x
3. Step 3: Cross multiply
   72,422.61x = 99,978.18 × 48,263.79
4. Step 4: Simplify right side
   72,422.61x = 4,825,325,884.10
5. Step 5: Solve for x
   x = 4,825,325,884.10/72,422.61
6. Step 6: Final answer
   x = 66,627.34