Finding the Fourth Proportional to 60,783, 91,169.88 and 21,342.78

Step by Step Solution

1. Step 1: Write the proportion equation
   60,783 : 91,169.88 = 21,342.78 : x
2. Step 2: Convert to fraction form
   60,783/91,169.88 = 21,342.78/x
3. Step 3: Cross multiply
   60,783x = 91,169.88 × 21,342.78
4. Step 4: Simplify right side
   60,783x = 1,945,818,691.47
5. Step 5: Solve for x
   x = 1,945,818,691.47/60,783
6. Step 6: Final answer
   x = 32,012.55