Finding the Fourth Proportional to 42,272.96, 63,409.98 and 20,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,272.96 : 63,409.98 = 20,088.50 : x
2. Step 2: Convert to fraction form
   42,272.96/63,409.98 = 20,088.50/x
3. Step 3: Cross multiply
   42,272.96x = 63,409.98 × 20,088.50
4. Step 4: Simplify right side
   42,272.96x = 1,273,811,383.23
5. Step 5: Solve for x
   x = 1,273,811,383.23/42,272.96
6. Step 6: Final answer
   x = 30,133.01