Finding the Fourth Proportional to 56,637.01, 78,160.78 and 31,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   56,637.01 : 78,160.78 = 31,142.06 : x
2. Step 2: Convert to fraction form
   56,637.01/78,160.78 = 31,142.06/x
3. Step 3: Cross multiply
   56,637.01x = 78,160.78 × 31,142.06
4. Step 4: Simplify right side
   56,637.01x = 2,434,087,544.70
5. Step 5: Solve for x
   x = 2,434,087,544.70/56,637.01
6. Step 6: Final answer
   x = 42,976.98