Finding the Fourth Proportional to 61,809.39, 92,618.17 and 42,871.02

Step by Step Solution

1. Step 1: Write the proportion equation
   61,809.39 : 92,618.17 = 42,871.02 : x
2. Step 2: Convert to fraction form
   61,809.39/92,618.17 = 42,871.02/x
3. Step 3: Cross multiply
   61,809.39x = 92,618.17 × 42,871.02
4. Step 4: Simplify right side
   61,809.39x = 3,970,635,418.43
5. Step 5: Solve for x
   x = 3,970,635,418.43/61,809.39
6. Step 6: Final answer
   x = 64,240.00