Finding the Fourth Proportional to 55,587.35, 76,658.72 and 51,459.05

Step by Step Solution

1. Step 1: Write the proportion equation
   55,587.35 : 76,658.72 = 51,459.05 : x
2. Step 2: Convert to fraction form
   55,587.35/76,658.72 = 51,459.05/x
3. Step 3: Cross multiply
   55,587.35x = 76,658.72 × 51,459.05
4. Step 4: Simplify right side
   55,587.35x = 3,944,784,648.12
5. Step 5: Solve for x
   x = 3,944,784,648.12/55,587.35
6. Step 6: Final answer
   x = 70,965.51