Finding the Fourth Proportional to 130,905.27, 196,352.42 and 42,156.81

Step by Step Solution

1. Step 1: Write the proportion equation
   130,905.27 : 196,352.42 = 42,156.81 : x
2. Step 2: Convert to fraction form
   130,905.27/196,352.42 = 42,156.81/x
3. Step 3: Cross multiply
   130,905.27x = 196,352.42 × 42,156.81
4. Step 4: Simplify right side
   130,905.27x = 8,277,591,662.98
5. Step 5: Solve for x
   x = 8,277,591,662.98/130,905.27
6. Step 6: Final answer
   x = 63,233.45