Finding the Fourth Proportional to 72,490.18, 108,750.91 and 21,885.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,490.18 : 108,750.91 = 21,885.01 : x
2. Step 2: Convert to fraction form
   72,490.18/108,750.91 = 21,885.01/x
3. Step 3: Cross multiply
   72,490.18x = 108,750.91 × 21,885.01
4. Step 4: Simplify right side
   72,490.18x = 2,380,014,605.32
5. Step 5: Solve for x
   x = 2,380,014,605.32/72,490.18
6. Step 6: Final answer
   x = 32,832.23