Finding the Fourth Proportional to 147,978.96, 221,946.48 and 54,462.84

Step by Step Solution

1. Step 1: Write the proportion equation
   147,978.96 : 221,946.48 = 54,462.84 : x
2. Step 2: Convert to fraction form
   147,978.96/221,946.48 = 54,462.84/x
3. Step 3: Cross multiply
   147,978.96x = 221,946.48 × 54,462.84
4. Step 4: Simplify right side
   147,978.96x = 12,087,835,628.80
5. Step 5: Solve for x
   x = 12,087,835,628.80/147,978.96
6. Step 6: Final answer
   x = 81,686.18