Finding the Fourth Proportional to 148,359.34, 221,459.81 and 137,395.18

Step by Step Solution

1. Step 1: Write the proportion equation
   148,359.34 : 221,459.81 = 137,395.18 : x
2. Step 2: Convert to fraction form
   148,359.34/221,459.81 = 137,395.18/x
3. Step 3: Cross multiply
   148,359.34x = 221,459.81 × 137,395.18
4. Step 4: Simplify right side
   148,359.34x = 30,427,510,457.72
5. Step 5: Solve for x
   x = 30,427,510,457.72/148,359.34
6. Step 6: Final answer
   x = 205,093.33