Finding the Fourth Proportional to 56,215.12, 77,573.82 and 31,063

Step by Step Solution

1. Step 1: Write the proportion equation
   56,215.12 : 77,573.82 = 31,063 : x
2. Step 2: Convert to fraction form
   56,215.12/77,573.82 = 31,063/x
3. Step 3: Cross multiply
   56,215.12x = 77,573.82 × 31,063
4. Step 4: Simplify right side
   56,215.12x = 2,409,675,570.66
5. Step 5: Solve for x
   x = 2,409,675,570.66/56,215.12
6. Step 6: Final answer
   x = 42,865.26