Finding the Fourth Proportional to 101,199.37, 139,596.59 and 65,389.38

Step by Step Solution

1. Step 1: Write the proportion equation
   101,199.37 : 139,596.59 = 65,389.38 : x
2. Step 2: Convert to fraction form
   101,199.37/139,596.59 = 65,389.38/x
3. Step 3: Cross multiply
   101,199.37x = 139,596.59 × 65,389.38
4. Step 4: Simplify right side
   101,199.37x = 9,128,134,470.21
5. Step 5: Solve for x
   x = 9,128,134,470.21/101,199.37
6. Step 6: Final answer
   x = 90,199.52