Finding the Fourth Proportional to 72,979.10, 100,720.83 and 42,776.33

Step by Step Solution

1. Step 1: Write the proportion equation
   72,979.10 : 100,720.83 = 42,776.33 : x
2. Step 2: Convert to fraction form
   72,979.10/100,720.83 = 42,776.33/x
3. Step 3: Cross multiply
   72,979.10x = 100,720.83 × 42,776.33
4. Step 4: Simplify right side
   72,979.10x = 4,308,467,118.76
5. Step 5: Solve for x
   x = 4,308,467,118.76/72,979.10
6. Step 6: Final answer
   x = 59,037.00