Finding the Fourth Proportional to 101,432.86, 139,930.18 and 65,634.43

Step by Step Solution

1. Step 1: Write the proportion equation
   101,432.86 : 139,930.18 = 65,634.43 : x
2. Step 2: Convert to fraction form
   101,432.86/139,930.18 = 65,634.43/x
3. Step 3: Cross multiply
   101,432.86x = 139,930.18 × 65,634.43
4. Step 4: Simplify right side
   101,432.86x = 9,184,237,604.10
5. Step 5: Solve for x
   x = 9,184,237,604.10/101,432.86
6. Step 6: Final answer
   x = 90,544.99