Finding the Fourth Proportional to 37,100.77, 55,656.36 and 12,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   37,100.77 : 55,656.36 = 12,142.78 : x
2. Step 2: Convert to fraction form
   37,100.77/55,656.36 = 12,142.78/x
3. Step 3: Cross multiply
   37,100.77x = 55,656.36 × 12,142.78
4. Step 4: Simplify right side
   37,100.77x = 675,822,795.94
5. Step 5: Solve for x
   x = 675,822,795.94/37,100.77
6. Step 6: Final answer
   x = 18,215.87