Finding the Fourth Proportional to 129,692.72, 178,965.24 and 73,118

Step by Step Solution

1. Step 1: Write the proportion equation
   129,692.72 : 178,965.24 = 73,118 : x
2. Step 2: Convert to fraction form
   129,692.72/178,965.24 = 73,118/x
3. Step 3: Cross multiply
   129,692.72x = 178,965.24 × 73,118
4. Step 4: Simplify right side
   129,692.72x = 13,085,580,418.32
5. Step 5: Solve for x
   x = 13,085,580,418.32/129,692.72
6. Step 6: Final answer
   x = 100,896.80