Finding the Fourth Proportional to 57,485.34, 79,307.73 and 42,413.94

Step by Step Solution

1. Step 1: Write the proportion equation
   57,485.34 : 79,307.73 = 42,413.94 : x
2. Step 2: Convert to fraction form
   57,485.34/79,307.73 = 42,413.94/x
3. Step 3: Cross multiply
   57,485.34x = 79,307.73 × 42,413.94
4. Step 4: Simplify right side
   57,485.34x = 3,363,753,301.76
5. Step 5: Solve for x
   x = 3,363,753,301.76/57,485.34
6. Step 6: Final answer
   x = 58,514.98