Finding the Fourth Proportional to 101,123.69, 139,551.10 and 55,802.99

Step by Step Solution

1. Step 1: Write the proportion equation
   101,123.69 : 139,551.10 = 55,802.99 : x
2. Step 2: Convert to fraction form
   101,123.69/139,551.10 = 55,802.99/x
3. Step 3: Cross multiply
   101,123.69x = 139,551.10 × 55,802.99
4. Step 4: Simplify right side
   101,123.69x = 7,787,368,847.16
5. Step 5: Solve for x
   x = 7,787,368,847.16/101,123.69
6. Step 6: Final answer
   x = 77,008.36