Finding the Fourth Proportional to 101,263.99, 139,743.72 and 55,945.09

Step by Step Solution

1. Step 1: Write the proportion equation
   101,263.99 : 139,743.72 = 55,945.09 : x
2. Step 2: Convert to fraction form
   101,263.99/139,743.72 = 55,945.09/x
3. Step 3: Cross multiply
   101,263.99x = 139,743.72 × 55,945.09
4. Step 4: Simplify right side
   101,263.99x = 7,817,974,992.33
5. Step 5: Solve for x
   x = 7,817,974,992.33/101,263.99
6. Step 6: Final answer
   x = 77,203.90