Finding the Fourth Proportional to 56,890.53, 78,513.38 and 31,401.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,890.53 : 78,513.38 = 31,401.96 : x
2. Step 2: Convert to fraction form
   56,890.53/78,513.38 = 31,401.96/x
3. Step 3: Cross multiply
   56,890.53x = 78,513.38 × 31,401.96
4. Step 4: Simplify right side
   56,890.53x = 2,465,473,861.18
5. Step 5: Solve for x
   x = 2,465,473,861.18/56,890.53
6. Step 6: Final answer
   x = 43,337.16