Finding the Fourth Proportional to 98,109.20, 147,123.48 and 38,936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,109.20 : 147,123.48 = 38,936.72 : x
2. Step 2: Convert to fraction form
   98,109.20/147,123.48 = 38,936.72/x
3. Step 3: Cross multiply
   98,109.20x = 147,123.48 × 38,936.72
4. Step 4: Simplify right side
   98,109.20x = 5,728,505,746.19
5. Step 5: Solve for x
   x = 5,728,505,746.19/98,109.20
6. Step 6: Final answer
   x = 58,389.08