Finding the Fourth Proportional to 67,880.18, 93,734.17 and 42,430.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67,880.18 : 93,734.17 = 42,430.05 : x
2. Step 2: Convert to fraction form
   67,880.18/93,734.17 = 42,430.05/x
3. Step 3: Cross multiply
   67,880.18x = 93,734.17 × 42,430.05
4. Step 4: Simplify right side
   67,880.18x = 3,977,145,413.73
5. Step 5: Solve for x
   x = 3,977,145,413.73/67,880.18
6. Step 6: Final answer
   x = 58,590.67