Finding the Fourth Proportional to 56,768.04, 78,338.88 and 31,617

Step by Step Solution

1. Step 1: Write the proportion equation
   56,768.04 : 78,338.88 = 31,617 : x
2. Step 2: Convert to fraction form
   56,768.04/78,338.88 = 31,617/x
3. Step 3: Cross multiply
   56,768.04x = 78,338.88 × 31,617
4. Step 4: Simplify right side
   56,768.04x = 2,476,840,368.96
5. Step 5: Solve for x
   x = 2,476,840,368.96/56,768.04
6. Step 6: Final answer
   x = 43,630.89