Finding the Fourth Proportional to 28,162.83, 42,235.61 and 19,453.71

Step by Step Solution

1. Step 1: Write the proportion equation
   28,162.83 : 42,235.61 = 19,453.71 : x
2. Step 2: Convert to fraction form
   28,162.83/42,235.61 = 19,453.71/x
3. Step 3: Cross multiply
   28,162.83x = 42,235.61 × 19,453.71
4. Step 4: Simplify right side
   28,162.83x = 821,639,211.34
5. Step 5: Solve for x
   x = 821,639,211.34/28,162.83
6. Step 6: Final answer
   x = 29,174.60