Finding the Fourth Proportional to 60,562.98, 90,856.62 and 21,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,562.98 : 90,856.62 = 21,109.50 : x
2. Step 2: Convert to fraction form
   60,562.98/90,856.62 = 21,109.50/x
3. Step 3: Cross multiply
   60,562.98x = 90,856.62 × 21,109.50
4. Step 4: Simplify right side
   60,562.98x = 1,917,937,819.89
5. Step 5: Solve for x
   x = 1,917,937,819.89/60,562.98
6. Step 6: Final answer
   x = 31,668.48