Finding the Fourth Proportional to 61,032.54, 91,091.25 and 57,046.74

Step by Step Solution

1. Step 1: Write the proportion equation
   61,032.54 : 91,091.25 = 57,046.74 : x
2. Step 2: Convert to fraction form
   61,032.54/91,091.25 = 57,046.74/x
3. Step 3: Cross multiply
   61,032.54x = 91,091.25 × 57,046.74
4. Step 4: Simplify right side
   61,032.54x = 5,196,458,855.03
5. Step 5: Solve for x
   x = 5,196,458,855.03/61,032.54
6. Step 6: Final answer
   x = 85,142.43