Finding the Fourth Proportional to 101,037.06, 139,406.76 and 65,219.40

Step by Step Solution

1. Step 1: Write the proportion equation
   101,037.06 : 139,406.76 = 65,219.40 : x
2. Step 2: Convert to fraction form
   101,037.06/139,406.76 = 65,219.40/x
3. Step 3: Cross multiply
   101,037.06x = 139,406.76 × 65,219.40
4. Step 4: Simplify right side
   101,037.06x = 9,092,025,243.14
5. Step 5: Solve for x
   x = 9,092,025,243.14/101,037.06
6. Step 6: Final answer
   x = 89,987.03