Finding the Fourth Proportional to 56,300.59, 77,693.79 and 31,150.09

Step by Step Solution

1. Step 1: Write the proportion equation
   56,300.59 : 77,693.79 = 31,150.09 : x
2. Step 2: Convert to fraction form
   56,300.59/77,693.79 = 31,150.09/x
3. Step 3: Cross multiply
   56,300.59x = 77,693.79 × 31,150.09
4. Step 4: Simplify right side
   56,300.59x = 2,420,168,550.94
5. Step 5: Solve for x
   x = 2,420,168,550.94/56,300.59
6. Step 6: Final answer
   x = 42,986.56