Finding the Fourth Proportional to 60,710.12, 91,078.15 and 21,269.60

Step by Step Solution

1. Step 1: Write the proportion equation
   60,710.12 : 91,078.15 = 21,269.60 : x
2. Step 2: Convert to fraction form
   60,710.12/91,078.15 = 21,269.60/x
3. Step 3: Cross multiply
   60,710.12x = 91,078.15 × 21,269.60
4. Step 4: Simplify right side
   60,710.12x = 1,937,196,144.59
5. Step 5: Solve for x
   x = 1,937,196,144.59/60,710.12
6. Step 6: Final answer
   x = 31,908.95