Finding the Fourth Proportional to 148,361.31, 221,906.16 and 137,592.37

Step by Step Solution

1. Step 1: Write the proportion equation
   148,361.31 : 221,906.16 = 137,592.37 : x
2. Step 2: Convert to fraction form
   148,361.31/221,906.16 = 137,592.37/x
3. Step 3: Cross multiply
   148,361.31x = 221,906.16 × 137,592.37
4. Step 4: Simplify right side
   148,361.31x = 30,532,594,362.40
5. Step 5: Solve for x
   x = 30,532,594,362.40/148,361.31
6. Step 6: Final answer
   x = 205,798.90