Finding the Fourth Proportional to 58,190.72, 80,333.88 and 39,170.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,190.72 : 80,333.88 = 39,170.50 : x
2. Step 2: Convert to fraction form
   58,190.72/80,333.88 = 39,170.50/x
3. Step 3: Cross multiply
   58,190.72x = 80,333.88 × 39,170.50
4. Step 4: Simplify right side
   58,190.72x = 3,146,718,192.59
5. Step 5: Solve for x
   x = 3,146,718,192.59/58,190.72
6. Step 6: Final answer
   x = 54,075.94