Finding the Fourth Proportional to 56,427, 77,869.27 and 31,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,427 : 77,869.27 = 31,276.50 : x
2. Step 2: Convert to fraction form
   56,427/77,869.27 = 31,276.50/x
3. Step 3: Cross multiply
   56,427x = 77,869.27 × 31,276.50
4. Step 4: Simplify right side
   56,427x = 2,435,478,223.16
5. Step 5: Solve for x
   x = 2,435,478,223.16/56,427
6. Step 6: Final answer
   x = 43,161.58