Finding the Fourth Proportional to 101,537, 139,870.68 and 86,381.12

Step by Step Solution

1. Step 1: Write the proportion equation
   101,537 : 139,870.68 = 86,381.12 : x
2. Step 2: Convert to fraction form
   101,537/139,870.68 = 86,381.12/x
3. Step 3: Cross multiply
   101,537x = 139,870.68 × 86,381.12
4. Step 4: Simplify right side
   101,537x = 12,082,185,993.56
5. Step 5: Solve for x
   x = 12,082,185,993.56/101,537
6. Step 6: Final answer
   x = 118,992.94