Finding the Fourth Proportional to 101,099.82, 139,516.79 and 55,778.17

Step by Step Solution

1. Step 1: Write the proportion equation
   101,099.82 : 139,516.79 = 55,778.17 : x
2. Step 2: Convert to fraction form
   101,099.82/139,516.79 = 55,778.17/x
3. Step 3: Cross multiply
   101,099.82x = 139,516.79 × 55,778.17
4. Step 4: Simplify right side
   101,099.82x = 7,781,991,230.47
5. Step 5: Solve for x
   x = 7,781,991,230.47/101,099.82
6. Step 6: Final answer
   x = 76,973.34