Finding the Fourth Proportional to 101,353.51, 139,867.83 and 55,413.31

Step by Step Solution

1. Step 1: Write the proportion equation
   101,353.51 : 139,867.83 = 55,413.31 : x
2. Step 2: Convert to fraction form
   101,353.51/139,867.83 = 55,413.31/x
3. Step 3: Cross multiply
   101,353.51x = 139,867.83 × 55,413.31
4. Step 4: Simplify right side
   101,353.51x = 7,750,539,422.82
5. Step 5: Solve for x
   x = 7,750,539,422.82/101,353.51
6. Step 6: Final answer
   x = 76,470.36