Finding the Fourth Proportional to 56,681.82, 78,217.50 and 31,187.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,681.82 : 78,217.50 = 31,187.25 : x
2. Step 2: Convert to fraction form
   56,681.82/78,217.50 = 31,187.25/x
3. Step 3: Cross multiply
   56,681.82x = 78,217.50 × 31,187.25
4. Step 4: Simplify right side
   56,681.82x = 2,439,388,726.88
5. Step 5: Solve for x
   x = 2,439,388,726.88/56,681.82
6. Step 6: Final answer
   x = 43,036.53