Finding the Fourth Proportional to 56,498.12, 77,964.82 and 31,347.40

Step by Step Solution

1. Step 1: Write the proportion equation
   56,498.12 : 77,964.82 = 31,347.40 : x
2. Step 2: Convert to fraction form
   56,498.12/77,964.82 = 31,347.40/x
3. Step 3: Cross multiply
   56,498.12x = 77,964.82 × 31,347.40
4. Step 4: Simplify right side
   56,498.12x = 2,443,994,398.47
5. Step 5: Solve for x
   x = 2,443,994,398.47/56,498.12
6. Step 6: Final answer
   x = 43,257.98