Finding the Fourth Proportional to 42,062.80, 63,084.46 and 12,473.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,062.80 : 63,084.46 = 12,473.50 : x
2. Step 2: Convert to fraction form
   42,062.80/63,084.46 = 12,473.50/x
3. Step 3: Cross multiply
   42,062.80x = 63,084.46 × 12,473.50
4. Step 4: Simplify right side
   42,062.80x = 786,884,011.81
5. Step 5: Solve for x
   x = 786,884,011.81/42,062.80
6. Step 6: Final answer
   x = 18,707.36