Finding the Fourth Proportional to 61,691.82, 85,278.18 and 55,043.34

Step by Step Solution

1. Step 1: Write the proportion equation
   61,691.82 : 85,278.18 = 55,043.34 : x
2. Step 2: Convert to fraction form
   61,691.82/85,278.18 = 55,043.34/x
3. Step 3: Cross multiply
   61,691.82x = 85,278.18 × 55,043.34
4. Step 4: Simplify right side
   61,691.82x = 4,693,995,856.32
5. Step 5: Solve for x
   x = 4,693,995,856.32/61,691.82
6. Step 6: Final answer
   x = 76,087.82