Finding the Fourth Proportional to 60,853.76, 91,290.72 and 19,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,853.76 : 91,290.72 = 19,310.72 : x
2. Step 2: Convert to fraction form
   60,853.76/91,290.72 = 19,310.72/x
3. Step 3: Cross multiply
   60,853.76x = 91,290.72 × 19,310.72
4. Step 4: Simplify right side
   60,853.76x = 1,762,889,532.52
5. Step 5: Solve for x
   x = 1,762,889,532.52/60,853.76
6. Step 6: Final answer
   x = 28,969.28