Finding the Fourth Proportional to 42,050.17, 63,056.94 and 12,057.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,050.17 : 63,056.94 = 12,057.78 : x
2. Step 2: Convert to fraction form
   42,050.17/63,056.94 = 12,057.78/x
3. Step 3: Cross multiply
   42,050.17x = 63,056.94 × 12,057.78
4. Step 4: Simplify right side
   42,050.17x = 760,326,709.99
5. Step 5: Solve for x
   x = 760,326,709.99/42,050.17
6. Step 6: Final answer
   x = 18,081.42