Finding the Fourth Proportional to 56,877.54, 78,492.69 and 31,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,877.54 : 78,492.69 = 31,726.50 : x
2. Step 2: Convert to fraction form
   56,877.54/78,492.69 = 31,726.50/x
3. Step 3: Cross multiply
   56,877.54x = 78,492.69 × 31,726.50
4. Step 4: Simplify right side
   56,877.54x = 2,490,298,329.29
5. Step 5: Solve for x
   x = 2,490,298,329.29/56,877.54
6. Step 6: Final answer
   x = 43,783.51