Finding the Fourth Proportional to 55,128.58, 76,079.22 and 29,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   55,128.58 : 76,079.22 = 29,978.08 : x
2. Step 2: Convert to fraction form
   55,128.58/76,079.22 = 29,978.08/x
3. Step 3: Cross multiply
   55,128.58x = 76,079.22 × 29,978.08
4. Step 4: Simplify right side
   55,128.58x = 2,280,708,943.50
5. Step 5: Solve for x
   x = 2,280,708,943.50/55,128.58
6. Step 6: Final answer
   x = 41,370.72