Finding the Fourth Proportional to 78,374.42, 108,156.31 and 42,564.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,374.42 : 108,156.31 = 42,564.14 : x
2. Step 2: Convert to fraction form
   78,374.42/108,156.31 = 42,564.14/x
3. Step 3: Cross multiply
   78,374.42x = 108,156.31 × 42,564.14
4. Step 4: Simplify right side
   78,374.42x = 4,603,580,320.72
5. Step 5: Solve for x
   x = 4,603,580,320.72/78,374.42
6. Step 6: Final answer
   x = 58,738.30