Finding the Fourth Proportional to 101,103.54, 139,521.98 and 55,781.93

Step by Step Solution

1. Step 1: Write the proportion equation
   101,103.54 : 139,521.98 = 55,781.93 : x
2. Step 2: Convert to fraction form
   101,103.54/139,521.98 = 55,781.93/x
3. Step 3: Cross multiply
   101,103.54x = 139,521.98 × 55,781.93
4. Step 4: Simplify right side
   101,103.54x = 7,782,804,345.30
5. Step 5: Solve for x
   x = 7,782,804,345.30/101,103.54
6. Step 6: Final answer
   x = 76,978.55