Finding the Fourth Proportional to 56,830.24, 78,426.18 and 31,681.36

Step by Step Solution

1. Step 1: Write the proportion equation
   56,830.24 : 78,426.18 = 31,681.36 : x
2. Step 2: Convert to fraction form
   56,830.24/78,426.18 = 31,681.36/x
3. Step 3: Cross multiply
   56,830.24x = 78,426.18 × 31,681.36
4. Step 4: Simplify right side
   56,830.24x = 2,484,648,042.00
5. Step 5: Solve for x
   x = 2,484,648,042.00/56,830.24
6. Step 6: Final answer
   x = 43,720.53