Finding the Fourth Proportional to 42,078.56, 63,095.72 and 12,492.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,078.56 : 63,095.72 = 12,492.32 : x
2. Step 2: Convert to fraction form
   42,078.56/63,095.72 = 12,492.32/x
3. Step 3: Cross multiply
   42,078.56x = 63,095.72 × 12,492.32
4. Step 4: Simplify right side
   42,078.56x = 788,211,924.87
5. Step 5: Solve for x
   x = 788,211,924.87/42,078.56
6. Step 6: Final answer
   x = 18,731.91