Finding the Fourth Proportional to 49,785.89, 74,677.89 and 12,346.07

Step by Step Solution

1. Step 1: Write the proportion equation
   49,785.89 : 74,677.89 = 12,346.07 : x
2. Step 2: Convert to fraction form
   49,785.89/74,677.89 = 12,346.07/x
3. Step 3: Cross multiply
   49,785.89x = 74,677.89 × 12,346.07
4. Step 4: Simplify right side
   49,785.89x = 921,978,457.39
5. Step 5: Solve for x
   x = 921,978,457.39/49,785.89
6. Step 6: Final answer
   x = 18,518.87