Finding the Fourth Proportional to 101,384.53, 139,864.15 and 65,586.07

Step by Step Solution

1. Step 1: Write the proportion equation
   101,384.53 : 139,864.15 = 65,586.07 : x
2. Step 2: Convert to fraction form
   101,384.53/139,864.15 = 65,586.07/x
3. Step 3: Cross multiply
   101,384.53x = 139,864.15 × 65,586.07
4. Step 4: Simplify right side
   101,384.53x = 9,173,139,932.39
5. Step 5: Solve for x
   x = 9,173,139,932.39/101,384.53
6. Step 6: Final answer
   x = 90,478.69