Finding the Fourth Proportional to 98,741.60, 148,128.56 and 31,278.24

Step by Step Solution

1. Step 1: Write the proportion equation
   98,741.60 : 148,128.56 = 31,278.24 : x
2. Step 2: Convert to fraction form
   98,741.60/148,128.56 = 31,278.24/x
3. Step 3: Cross multiply
   98,741.60x = 148,128.56 × 31,278.24
4. Step 4: Simplify right side
   98,741.60x = 4,633,200,650.53
5. Step 5: Solve for x
   x = 4,633,200,650.53/98,741.60
6. Step 6: Final answer
   x = 46,922.48