Finding the Fourth Proportional to 89,641.80, 123,704.33 and 53,368.58

Step by Step Solution

1. Step 1: Write the proportion equation
   89,641.80 : 123,704.33 = 53,368.58 : x
2. Step 2: Convert to fraction form
   89,641.80/123,704.33 = 53,368.58/x
3. Step 3: Cross multiply
   89,641.80x = 123,704.33 × 53,368.58
4. Step 4: Simplify right side
   89,641.80x = 6,601,923,546.59
5. Step 5: Solve for x
   x = 6,601,923,546.59/89,641.80
6. Step 6: Final answer
   x = 73,647.82