Finding the Fourth Proportional to 74,225.89, 102,445.43 and 42,394.78

Step by Step Solution

1. Step 1: Write the proportion equation
   74,225.89 : 102,445.43 = 42,394.78 : x
2. Step 2: Convert to fraction form
   74,225.89/102,445.43 = 42,394.78/x
3. Step 3: Cross multiply
   74,225.89x = 102,445.43 × 42,394.78
4. Step 4: Simplify right side
   74,225.89x = 4,343,151,466.86
5. Step 5: Solve for x
   x = 4,343,151,466.86/74,225.89
6. Step 6: Final answer
   x = 58,512.62