Finding the Fourth Proportional to 78,174.72, 107,881.20 and 42,364.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,174.72 : 107,881.20 = 42,364.42 : x
2. Step 2: Convert to fraction form
   78,174.72/107,881.20 = 42,364.42/x
3. Step 3: Cross multiply
   78,174.72x = 107,881.20 × 42,364.42
4. Step 4: Simplify right side
   78,174.72x = 4,570,324,466.90
5. Step 5: Solve for x
   x = 4,570,324,466.90/78,174.72
6. Step 6: Final answer
   x = 58,462.95