Finding the Fourth Proportional to 56,259, 77,630.70 and 31,105.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,259 : 77,630.70 = 31,105.08 : x
2. Step 2: Convert to fraction form
   56,259/77,630.70 = 31,105.08/x
3. Step 3: Cross multiply
   56,259x = 77,630.70 × 31,105.08
4. Step 4: Simplify right side
   56,259x = 2,414,709,133.96
5. Step 5: Solve for x
   x = 2,414,709,133.96/56,259
6. Step 6: Final answer
   x = 42,921.29