Finding the Fourth Proportional to 158,872.07, 238,362.71 and 99,638.39

Step by Step Solution

1. Step 1: Write the proportion equation
   158,872.07 : 238,362.71 = 99,638.39 : x
2. Step 2: Convert to fraction form
   158,872.07/238,362.71 = 99,638.39/x
3. Step 3: Cross multiply
   158,872.07x = 238,362.71 × 99,638.39
4. Step 4: Simplify right side
   158,872.07x = 23,750,074,970.43
5. Step 5: Solve for x
   x = 23,750,074,970.43/158,872.07
6. Step 6: Final answer
   x = 149,491.83