Finding the Fourth Proportional to 147,978.46, 221,945.73 and 54,462.34

Step by Step Solution

1. Step 1: Write the proportion equation
   147,978.46 : 221,945.73 = 54,462.34 : x
2. Step 2: Convert to fraction form
   147,978.46/221,945.73 = 54,462.34/x
3. Step 3: Cross multiply
   147,978.46x = 221,945.73 × 54,462.34
4. Step 4: Simplify right side
   147,978.46x = 12,087,683,808.81
5. Step 5: Solve for x
   x = 12,087,683,808.81/147,978.46
6. Step 6: Final answer
   x = 81,685.43