Finding the Fourth Proportional to 56,604.76, 78,116.45 and 31,112.03

Step by Step Solution

1. Step 1: Write the proportion equation
   56,604.76 : 78,116.45 = 31,112.03 : x
2. Step 2: Convert to fraction form
   56,604.76/78,116.45 = 31,112.03/x
3. Step 3: Cross multiply
   56,604.76x = 78,116.45 × 31,112.03
4. Step 4: Simplify right side
   56,604.76x = 2,430,361,550.63
5. Step 5: Solve for x
   x = 2,430,361,550.63/56,604.76
6. Step 6: Final answer
   x = 42,935.64