Finding the Fourth Proportional to 56,086.15, 84,111.02 and 18,636.17

Step by Step Solution

1. Step 1: Write the proportion equation
   56,086.15 : 84,111.02 = 18,636.17 : x
2. Step 2: Convert to fraction form
   56,086.15/84,111.02 = 18,636.17/x
3. Step 3: Cross multiply
   56,086.15x = 84,111.02 × 18,636.17
4. Step 4: Simplify right side
   56,086.15x = 1,567,506,753.86
5. Step 5: Solve for x
   x = 1,567,506,753.86/56,086.15
6. Step 6: Final answer
   x = 27,948.20