Finding the Fourth Proportional to 49,612.86, 74,341.50 and 42,186.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,612.86 : 74,341.50 = 42,186.78 : x
2. Step 2: Convert to fraction form
   49,612.86/74,341.50 = 42,186.78/x
3. Step 3: Cross multiply
   49,612.86x = 74,341.50 × 42,186.78
4. Step 4: Simplify right side
   49,612.86x = 3,136,228,505.37
5. Step 5: Solve for x
   x = 3,136,228,505.37/49,612.86
6. Step 6: Final answer
   x = 63,214.02