Finding the Fourth Proportional to 42,054.25, 63,070.61 and 12,465.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,054.25 : 63,070.61 = 12,465.16 : x
2. Step 2: Convert to fraction form
   42,054.25/63,070.61 = 12,465.16/x
3. Step 3: Cross multiply
   42,054.25x = 63,070.61 × 12,465.16
4. Step 4: Simplify right side
   42,054.25x = 786,185,182.62
5. Step 5: Solve for x
   x = 786,185,182.62/42,054.25
6. Step 6: Final answer
   x = 18,694.55