Finding the Fourth Proportional to 56,762.33, 78,338.16 and 31,271.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,762.33 : 78,338.16 = 31,271.30 : x
2. Step 2: Convert to fraction form
   56,762.33/78,338.16 = 31,271.30/x
3. Step 3: Cross multiply
   56,762.33x = 78,338.16 × 31,271.30
4. Step 4: Simplify right side
   56,762.33x = 2,449,736,298.65
5. Step 5: Solve for x
   x = 2,449,736,298.65/56,762.33
6. Step 6: Final answer
   x = 43,157.79