Finding the Fourth Proportional to 162,378.72, 243,505.74 and 55,742.79

Step by Step Solution

1. Step 1: Write the proportion equation
   162,378.72 : 243,505.74 = 55,742.79 : x
2. Step 2: Convert to fraction form
   162,378.72/243,505.74 = 55,742.79/x
3. Step 3: Cross multiply
   162,378.72x = 243,505.74 × 55,742.79
4. Step 4: Simplify right side
   162,378.72x = 13,573,689,328.61
5. Step 5: Solve for x
   x = 13,573,689,328.61/162,378.72
6. Step 6: Final answer
   x = 83,592.78