Finding the Fourth Proportional to 71,952, 99,293.76 and 42,144

Step by Step Solution

1. Step 1: Write the proportion equation
   71,952 : 99,293.76 = 42,144 : x
2. Step 2: Convert to fraction form
   71,952/99,293.76 = 42,144/x
3. Step 3: Cross multiply
   71,952x = 99,293.76 × 42,144
4. Step 4: Simplify right side
   71,952x = 4,184,636,221.44
5. Step 5: Solve for x
   x = 4,184,636,221.44/71,952
6. Step 6: Final answer
   x = 58,158.72