Finding the Fourth Proportional to 56,279.12, 77,662.14 and 31,127

Step by Step Solution

1. Step 1: Write the proportion equation
   56,279.12 : 77,662.14 = 31,127 : x
2. Step 2: Convert to fraction form
   56,279.12/77,662.14 = 31,127/x
3. Step 3: Cross multiply
   56,279.12x = 77,662.14 × 31,127
4. Step 4: Simplify right side
   56,279.12x = 2,417,389,431.78
5. Step 5: Solve for x
   x = 2,417,389,431.78/56,279.12
6. Step 6: Final answer
   x = 42,953.58