Finding the Fourth Proportional to 42,218.86, 63,400.81 and 37,485.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,218.86 : 63,400.81 = 37,485.68 : x
2. Step 2: Convert to fraction form
   42,218.86/63,400.81 = 37,485.68/x
3. Step 3: Cross multiply
   42,218.86x = 63,400.81 × 37,485.68
4. Step 4: Simplify right side
   42,218.86x = 2,376,622,158.40
5. Step 5: Solve for x
   x = 2,376,622,158.40/42,218.86
6. Step 6: Final answer
   x = 56,292.90