Finding the Fourth Proportional to 72,239.18, 108,900.18 and 67,422.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,239.18 : 108,900.18 = 67,422.38 : x
2. Step 2: Convert to fraction form
   72,239.18/108,900.18 = 67,422.38/x
3. Step 3: Cross multiply
   72,239.18x = 108,900.18 × 67,422.38
4. Step 4: Simplify right side
   72,239.18x = 7,342,308,773.53
5. Step 5: Solve for x
   x = 7,342,308,773.53/72,239.18
6. Step 6: Final answer
   x = 101,638.88