Finding the Fourth Proportional to 238,945.32, 358,469.82 and 72,729

Step by Step Solution

1. Step 1: Write the proportion equation
   238,945.32 : 358,469.82 = 72,729 : x
2. Step 2: Convert to fraction form
   238,945.32/358,469.82 = 72,729/x
3. Step 3: Cross multiply
   238,945.32x = 358,469.82 × 72,729
4. Step 4: Simplify right side
   238,945.32x = 26,071,151,538.78
5. Step 5: Solve for x
   x = 26,071,151,538.78/238,945.32
6. Step 6: Final answer
   x = 109,109.28