Finding the Fourth Proportional to 101,145.30, 139,579.83 and 55,823.29

Step by Step Solution

1. Step 1: Write the proportion equation
   101,145.30 : 139,579.83 = 55,823.29 : x
2. Step 2: Convert to fraction form
   101,145.30/139,579.83 = 55,823.29/x
3. Step 3: Cross multiply
   101,145.30x = 139,579.83 × 55,823.29
4. Step 4: Simplify right side
   101,145.30x = 7,791,804,906.81
5. Step 5: Solve for x
   x = 7,791,804,906.81/101,145.30
6. Step 6: Final answer
   x = 77,035.76