Finding the Fourth Proportional to 61,251.59, 91,796.73 and 57,256.23

Step by Step Solution

1. Step 1: Write the proportion equation
   61,251.59 : 91,796.73 = 57,256.23 : x
2. Step 2: Convert to fraction form
   61,251.59/91,796.73 = 57,256.23/x
3. Step 3: Cross multiply
   61,251.59x = 91,796.73 × 57,256.23
4. Step 4: Simplify right side
   61,251.59x = 5,255,934,815.65
5. Step 5: Solve for x
   x = 5,255,934,815.65/61,251.59
6. Step 6: Final answer
   x = 85,808.95