Finding the Fourth Proportional to 101,316.89, 139,817.77 and 55,377.48

Step by Step Solution

1. Step 1: Write the proportion equation
   101,316.89 : 139,817.77 = 55,377.48 : x
2. Step 2: Convert to fraction form
   101,316.89/139,817.77 = 55,377.48/x
3. Step 3: Cross multiply
   101,316.89x = 139,817.77 × 55,377.48
4. Step 4: Simplify right side
   101,316.89x = 7,742,755,062.73
5. Step 5: Solve for x
   x = 7,742,755,062.73/101,316.89
6. Step 6: Final answer
   x = 76,421.17