Finding the Fourth Proportional to 144,693.12, 199,877.76 and 109,156.80

Step by Step Solution

1. Step 1: Write the proportion equation
   144,693.12 : 199,877.76 = 109,156.80 : x
2. Step 2: Convert to fraction form
   144,693.12/199,877.76 = 109,156.80/x
3. Step 3: Cross multiply
   144,693.12x = 199,877.76 × 109,156.80
4. Step 4: Simplify right side
   144,693.12x = 21,818,016,672.77
5. Step 5: Solve for x
   x = 21,818,016,672.77/144,693.12
6. Step 6: Final answer
   x = 150,788.21