Finding the Fourth Proportional to 101,292.72, 139,693.15 and 84,353.06

Step by Step Solution

1. Step 1: Write the proportion equation
   101,292.72 : 139,693.15 = 84,353.06 : x
2. Step 2: Convert to fraction form
   101,292.72/139,693.15 = 84,353.06/x
3. Step 3: Cross multiply
   101,292.72x = 139,693.15 × 84,353.06
4. Step 4: Simplify right side
   101,292.72x = 11,783,544,663.54
5. Step 5: Solve for x
   x = 11,783,544,663.54/101,292.72
6. Step 6: Final answer
   x = 116,331.60