Finding the Fourth Proportional to 101,003.79, 139,386.17 and 55,683.39

Step by Step Solution

1. Step 1: Write the proportion equation
   101,003.79 : 139,386.17 = 55,683.39 : x
2. Step 2: Convert to fraction form
   101,003.79/139,386.17 = 55,683.39/x
3. Step 3: Cross multiply
   101,003.79x = 139,386.17 × 55,683.39
4. Step 4: Simplify right side
   101,003.79x = 7,761,494,715.40
5. Step 5: Solve for x
   x = 7,761,494,715.40/101,003.79
6. Step 6: Final answer
   x = 76,843.60