Finding the Fourth Proportional to 57,980.98, 86,895.42 and 42,024.07

Step by Step Solution

1. Step 1: Write the proportion equation
   57,980.98 : 86,895.42 = 42,024.07 : x
2. Step 2: Convert to fraction form
   57,980.98/86,895.42 = 42,024.07/x
3. Step 3: Cross multiply
   57,980.98x = 86,895.42 × 42,024.07
4. Step 4: Simplify right side
   57,980.98x = 3,651,699,212.76
5. Step 5: Solve for x
   x = 3,651,699,212.76/57,980.98
6. Step 6: Final answer
   x = 62,980.98