Finding the Fourth Proportional to 55,436.48, 83,102.88 and 20,366.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,436.48 : 83,102.88 = 20,366.72 : x
2. Step 2: Convert to fraction form
   55,436.48/83,102.88 = 20,366.72/x
3. Step 3: Cross multiply
   55,436.48x = 83,102.88 × 20,366.72
4. Step 4: Simplify right side
   55,436.48x = 1,692,533,088.15
5. Step 5: Solve for x
   x = 1,692,533,088.15/55,436.48
6. Step 6: Final answer
   x = 30,531.03