Finding the Fourth Proportional to 89,173.61, 123,055.71 and 53,383.35

Step by Step Solution

1. Step 1: Write the proportion equation
   89,173.61 : 123,055.71 = 53,383.35 : x
2. Step 2: Convert to fraction form
   89,173.61/123,055.71 = 53,383.35/x
3. Step 3: Cross multiply
   89,173.61x = 123,055.71 × 53,383.35
4. Step 4: Simplify right side
   89,173.61x = 6,569,126,036.43
5. Step 5: Solve for x
   x = 6,569,126,036.43/89,173.61
6. Step 6: Final answer
   x = 73,666.71