Finding the Fourth Proportional to 75,692.72, 104,454.60 and 42,158

Step by Step Solution

1. Step 1: Write the proportion equation
   75,692.72 : 104,454.60 = 42,158 : x
2. Step 2: Convert to fraction form
   75,692.72/104,454.60 = 42,158/x
3. Step 3: Cross multiply
   75,692.72x = 104,454.60 × 42,158
4. Step 4: Simplify right side
   75,692.72x = 4,403,597,026.80
5. Step 5: Solve for x
   x = 4,403,597,026.80/75,692.72
6. Step 6: Final answer
   x = 58,177.29