Finding the Fourth Proportional to 56,806.10, 78,389.25 and 31,307.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,806.10 : 78,389.25 = 31,307.48 : x
2. Step 2: Convert to fraction form
   56,806.10/78,389.25 = 31,307.48/x
3. Step 3: Cross multiply
   56,806.10x = 78,389.25 × 31,307.48
4. Step 4: Simplify right side
   56,806.10x = 2,454,169,876.59
5. Step 5: Solve for x
   x = 2,454,169,876.59/56,806.10
6. Step 6: Final answer
   x = 43,202.58