Finding the Fourth Proportional to 101,025.23, 139,415.78 and 55,705.02

Step by Step Solution

1. Step 1: Write the proportion equation
   101,025.23 : 139,415.78 = 55,705.02 : x
2. Step 2: Convert to fraction form
   101,025.23/139,415.78 = 55,705.02/x
3. Step 3: Cross multiply
   101,025.23x = 139,415.78 × 55,705.02
4. Step 4: Simplify right side
   101,025.23x = 7,766,158,429.67
5. Step 5: Solve for x
   x = 7,766,158,429.67/101,025.23
6. Step 6: Final answer
   x = 76,873.46