Finding the Fourth Proportional to 72,139.84, 108,221.40 and 22,219.93

Step by Step Solution

1. Step 1: Write the proportion equation
   72,139.84 : 108,221.40 = 22,219.93 : x
2. Step 2: Convert to fraction form
   72,139.84/108,221.40 = 22,219.93/x
3. Step 3: Cross multiply
   72,139.84x = 108,221.40 × 22,219.93
4. Step 4: Simplify right side
   72,139.84x = 2,404,671,932.50
5. Step 5: Solve for x
   x = 2,404,671,932.50/72,139.84
6. Step 6: Final answer
   x = 33,333.48