Finding the Fourth Proportional to 55,978.91, 83,771.15 and 34,928.87

Step by Step Solution

1. Step 1: Write the proportion equation
   55,978.91 : 83,771.15 = 34,928.87 : x
2. Step 2: Convert to fraction form
   55,978.91/83,771.15 = 34,928.87/x
3. Step 3: Cross multiply
   55,978.91x = 83,771.15 × 34,928.87
4. Step 4: Simplify right side
   55,978.91x = 2,926,031,014.60
5. Step 5: Solve for x
   x = 2,926,031,014.60/55,978.91
6. Step 6: Final answer
   x = 52,270.24