Finding the Fourth Proportional to 238,732.48, 358,106.72 and 72,520

Step by Step Solution

1. Step 1: Write the proportion equation
   238,732.48 : 358,106.72 = 72,520 : x
2. Step 2: Convert to fraction form
   238,732.48/358,106.72 = 72,520/x
3. Step 3: Cross multiply
   238,732.48x = 358,106.72 × 72,520
4. Step 4: Simplify right side
   238,732.48x = 25,969,899,334.40
5. Step 5: Solve for x
   x = 25,969,899,334.40/238,732.48
6. Step 6: Final answer
   x = 108,782.43