Finding the Fourth Proportional to 138,111.27, 190,610.46 and 77,684.46

Step by Step Solution

1. Step 1: Write the proportion equation
   138,111.27 : 190,610.46 = 77,684.46 : x
2. Step 2: Convert to fraction form
   138,111.27/190,610.46 = 77,684.46/x
3. Step 3: Cross multiply
   138,111.27x = 190,610.46 × 77,684.46
4. Step 4: Simplify right side
   138,111.27x = 14,807,470,655.45
5. Step 5: Solve for x
   x = 14,807,470,655.45/138,111.27
6. Step 6: Final answer
   x = 107,214.06