Finding the Fourth Proportional to 101,019.61, 139,373.22 and 65,233.81

Step by Step Solution

1. Step 1: Write the proportion equation
   101,019.61 : 139,373.22 = 65,233.81 : x
2. Step 2: Convert to fraction form
   101,019.61/139,373.22 = 65,233.81/x
3. Step 3: Cross multiply
   101,019.61x = 139,373.22 × 65,233.81
4. Step 4: Simplify right side
   101,019.61x = 9,091,846,152.57
5. Step 5: Solve for x
   x = 9,091,846,152.57/101,019.61
6. Step 6: Final answer
   x = 90,000.80