Finding the Fourth Proportional to 61,053.48, 91,582.56 and 18,937.89

Step by Step Solution

1. Step 1: Write the proportion equation
   61,053.48 : 91,582.56 = 18,937.89 : x
2. Step 2: Convert to fraction form
   61,053.48/91,582.56 = 18,937.89/x
3. Step 3: Cross multiply
   61,053.48x = 91,582.56 × 18,937.89
4. Step 4: Simplify right side
   61,053.48x = 1,734,380,447.20
5. Step 5: Solve for x
   x = 1,734,380,447.20/61,053.48
6. Step 6: Final answer
   x = 28,407.56