Finding the Fourth Proportional to 56,686.94, 78,228.69 and 31,196.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,686.94 : 78,228.69 = 31,196.24 : x
2. Step 2: Convert to fraction form
   56,686.94/78,228.69 = 31,196.24/x
3. Step 3: Cross multiply
   56,686.94x = 78,228.69 × 31,196.24
4. Step 4: Simplify right side
   56,686.94x = 2,440,440,596.98
5. Step 5: Solve for x
   x = 2,440,440,596.98/56,686.94
6. Step 6: Final answer
   x = 43,051.20