Finding the Fourth Proportional to 158,478.89, 238,014.48 and 139,510.31

Step by Step Solution

1. Step 1: Write the proportion equation
   158,478.89 : 238,014.48 = 139,510.31 : x
2. Step 2: Convert to fraction form
   158,478.89/238,014.48 = 139,510.31/x
3. Step 3: Cross multiply
   158,478.89x = 238,014.48 × 139,510.31
4. Step 4: Simplify right side
   158,478.89x = 33,205,473,222.38
5. Step 5: Solve for x
   x = 33,205,473,222.38/158,478.89
6. Step 6: Final answer
   x = 209,526.17