Finding the Fourth Proportional to 148,340.34, 221,431.50 and 137,376.18

Step by Step Solution

1. Step 1: Write the proportion equation
   148,340.34 : 221,431.50 = 137,376.18 : x
2. Step 2: Convert to fraction form
   148,340.34/221,431.50 = 137,376.18/x
3. Step 3: Cross multiply
   148,340.34x = 221,431.50 × 137,376.18
4. Step 4: Simplify right side
   148,340.34x = 30,419,413,601.67
5. Step 5: Solve for x
   x = 30,419,413,601.67/148,340.34
6. Step 6: Final answer
   x = 205,065.01