Finding the Fourth Proportional to 154,589.31, 231,970.23 and 83,510.60

Step by Step Solution

1. Step 1: Write the proportion equation
   154,589.31 : 231,970.23 = 83,510.60 : x
2. Step 2: Convert to fraction form
   154,589.31/231,970.23 = 83,510.60/x
3. Step 3: Cross multiply
   154,589.31x = 231,970.23 × 83,510.60
4. Step 4: Simplify right side
   154,589.31x = 19,371,971,929.59
5. Step 5: Solve for x
   x = 19,371,971,929.59/154,589.31
6. Step 6: Final answer
   x = 125,312.49