Finding the Fourth Proportional to 56,804.31, 78,390.86 and 31,653.81

Step by Step Solution

1. Step 1: Write the proportion equation
   56,804.31 : 78,390.86 = 31,653.81 : x
2. Step 2: Convert to fraction form
   56,804.31/78,390.86 = 31,653.81/x
3. Step 3: Cross multiply
   56,804.31x = 78,390.86 × 31,653.81
4. Step 4: Simplify right side
   56,804.31x = 2,481,369,229.91
5. Step 5: Solve for x
   x = 2,481,369,229.91/56,804.31
6. Step 6: Final answer
   x = 43,682.76