Finding the Fourth Proportional to 56,885.81, 78,501.77 and 31,392.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,885.81 : 78,501.77 = 31,392.38 : x
2. Step 2: Convert to fraction form
   56,885.81/78,501.77 = 31,392.38/x
3. Step 3: Cross multiply
   56,885.81x = 78,501.77 × 31,392.38
4. Step 4: Simplify right side
   56,885.81x = 2,464,356,845.04
5. Step 5: Solve for x
   x = 2,464,356,845.04/56,885.81
6. Step 6: Final answer
   x = 43,321.12