Finding the Fourth Proportional to 72,961.96, 100,753.86 and 55,026.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,961.96 : 100,753.86 = 55,026.28 : x
2. Step 2: Convert to fraction form
   72,961.96/100,753.86 = 55,026.28/x
3. Step 3: Cross multiply
   72,961.96x = 100,753.86 × 55,026.28
4. Step 4: Simplify right side
   72,961.96x = 5,544,110,111.44
5. Step 5: Solve for x
   x = 5,544,110,111.44/72,961.96
6. Step 6: Final answer
   x = 75,986.31