Finding the Fourth Proportional to 109,250.72, 163,973.76 and 55,979.04

Step by Step Solution

1. Step 1: Write the proportion equation
   109,250.72 : 163,973.76 = 55,979.04 : x
2. Step 2: Convert to fraction form
   109,250.72/163,973.76 = 55,979.04/x
3. Step 3: Cross multiply
   109,250.72x = 163,973.76 × 55,979.04
4. Step 4: Simplify right side
   109,250.72x = 9,179,093,669.99
5. Step 5: Solve for x
   x = 9,179,093,669.99/109,250.72
6. Step 6: Final answer
   x = 84,018.61