Finding the Fourth Proportional to 146,705, 202,457.28 and 79,641.32

Step by Step Solution

1. Step 1: Write the proportion equation
   146,705 : 202,457.28 = 79,641.32 : x
2. Step 2: Convert to fraction form
   146,705/202,457.28 = 79,641.32/x
3. Step 3: Cross multiply
   146,705x = 202,457.28 × 79,641.32
4. Step 4: Simplify right side
   146,705x = 16,123,965,022.81
5. Step 5: Solve for x
   x = 16,123,965,022.81/146,705
6. Step 6: Final answer
   x = 109,907.40