Finding the Fourth Proportional to 71,972, 99,334.80 and 42,164

Step by Step Solution

1. Step 1: Write the proportion equation
   71,972 : 99,334.80 = 42,164 : x
2. Step 2: Convert to fraction form
   71,972/99,334.80 = 42,164/x
3. Step 3: Cross multiply
   71,972x = 99,334.80 × 42,164
4. Step 4: Simplify right side
   71,972x = 4,188,352,507.20
5. Step 5: Solve for x
   x = 4,188,352,507.20/71,972
6. Step 6: Final answer
   x = 58,194.19