Finding the Fourth Proportional to 98,105.82, 147,128.55 and 31,528.07

Step by Step Solution

1. Step 1: Write the proportion equation
   98,105.82 : 147,128.55 = 31,528.07 : x
2. Step 2: Convert to fraction form
   98,105.82/147,128.55 = 31,528.07/x
3. Step 3: Cross multiply
   98,105.82x = 147,128.55 × 31,528.07
4. Step 4: Simplify right side
   98,105.82x = 4,638,679,223.40
5. Step 5: Solve for x
   x = 4,638,679,223.40/98,105.82
6. Step 6: Final answer
   x = 47,282.41