Finding the Fourth Proportional to 72,968.50, 100,692.16 and 42,339.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,968.50 : 100,692.16 = 42,339.22 : x
2. Step 2: Convert to fraction form
   72,968.50/100,692.16 = 42,339.22/x
3. Step 3: Cross multiply
   72,968.50x = 100,692.16 × 42,339.22
4. Step 4: Simplify right side
   72,968.50x = 4,263,227,961.49
5. Step 5: Solve for x
   x = 4,263,227,961.49/72,968.50
6. Step 6: Final answer
   x = 58,425.60