Finding the Fourth Proportional to 61,287.32, 84,608.00 and 42,391.64

Step by Step Solution

1. Step 1: Write the proportion equation
   61,287.32 : 84,608.00 = 42,391.64 : x
2. Step 2: Convert to fraction form
   61,287.32/84,608.00 = 42,391.64/x
3. Step 3: Cross multiply
   61,287.32x = 84,608.00 × 42,391.64
4. Step 4: Simplify right side
   61,287.32x = 3,586,671,242.12
5. Step 5: Solve for x
   x = 3,586,671,242.12/61,287.32
6. Step 6: Final answer
   x = 58,522.24