Finding the Fourth Proportional to 101,259.45, 139,571.37 and 71,801.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,259.45 : 139,571.37 = 71,801.10 : x
2. Step 2: Convert to fraction form
   101,259.45/139,571.37 = 71,801.10/x
3. Step 3: Cross multiply
   101,259.45x = 139,571.37 × 71,801.10
4. Step 4: Simplify right side
   101,259.45x = 10,021,377,894.51
5. Step 5: Solve for x
   x = 10,021,377,894.51/101,259.45
6. Step 6: Final answer
   x = 98,967.33