Finding the Fourth Proportional to 74,391.34, 102,635.06 and 42,121.56

Step by Step Solution

1. Step 1: Write the proportion equation
   74,391.34 : 102,635.06 = 42,121.56 : x
2. Step 2: Convert to fraction form
   74,391.34/102,635.06 = 42,121.56/x
3. Step 3: Cross multiply
   74,391.34x = 102,635.06 × 42,121.56
4. Step 4: Simplify right side
   74,391.34x = 4,323,148,837.89
5. Step 5: Solve for x
   x = 4,323,148,837.89/74,391.34
6. Step 6: Final answer
   x = 58,113.60