Finding the Fourth Proportional to 55,433.72, 83,140.53 and 19,415.48

Step by Step Solution

1. Step 1: Write the proportion equation
   55,433.72 : 83,140.53 = 19,415.48 : x
2. Step 2: Convert to fraction form
   55,433.72/83,140.53 = 19,415.48/x
3. Step 3: Cross multiply
   55,433.72x = 83,140.53 × 19,415.48
4. Step 4: Simplify right side
   55,433.72x = 1,614,212,808.89
5. Step 5: Solve for x
   x = 1,614,212,808.89/55,433.72
6. Step 6: Final answer
   x = 29,119.69