Finding the Fourth Proportional to 42,071.13, 63,095.85 and 12,482.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,071.13 : 63,095.85 = 12,482.28 : x
2. Step 2: Convert to fraction form
   42,071.13/63,095.85 = 12,482.28/x
3. Step 3: Cross multiply
   42,071.13x = 63,095.85 × 12,482.28
4. Step 4: Simplify right side
   42,071.13x = 787,580,066.54
5. Step 5: Solve for x
   x = 787,580,066.54/42,071.13
6. Step 6: Final answer
   x = 18,720.20