Finding the Fourth Proportional to 42,402.78, 63,816.84 and 31,927.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,402.78 : 63,816.84 = 31,927.05 : x
2. Step 2: Convert to fraction form
   42,402.78/63,816.84 = 31,927.05/x
3. Step 3: Cross multiply
   42,402.78x = 63,816.84 × 31,927.05
4. Step 4: Simplify right side
   42,402.78x = 2,037,483,441.52
5. Step 5: Solve for x
   x = 2,037,483,441.52/42,402.78
6. Step 6: Final answer
   x = 48,050.70