Finding the Fourth Proportional to 101,008.67, 139,389.39 and 55,685.60

Step by Step Solution

1. Step 1: Write the proportion equation
   101,008.67 : 139,389.39 = 55,685.60 : x
2. Step 2: Convert to fraction form
   101,008.67/139,389.39 = 55,685.60/x
3. Step 3: Cross multiply
   101,008.67x = 139,389.39 × 55,685.60
4. Step 4: Simplify right side
   101,008.67x = 7,761,981,815.78
5. Step 5: Solve for x
   x = 7,761,981,815.78/101,008.67
6. Step 6: Final answer
   x = 76,844.71