Finding the Fourth Proportional to 101,061.65, 139,386.34 and 65,260.46

Step by Step Solution

1. Step 1: Write the proportion equation
   101,061.65 : 139,386.34 = 65,260.46 : x
2. Step 2: Convert to fraction form
   101,061.65/139,386.34 = 65,260.46/x
3. Step 3: Cross multiply
   101,061.65x = 139,386.34 × 65,260.46
4. Step 4: Simplify right side
   101,061.65x = 9,096,416,666.12
5. Step 5: Solve for x
   x = 9,096,416,666.12/101,061.65
6. Step 6: Final answer
   x = 90,008.59