Finding the Fourth Proportional to 98,404.30, 135,786.72 and 55,375.48

Step by Step Solution

1. Step 1: Write the proportion equation
   98,404.30 : 135,786.72 = 55,375.48 : x
2. Step 2: Convert to fraction form
   98,404.30/135,786.72 = 55,375.48/x
3. Step 3: Cross multiply
   98,404.30x = 135,786.72 × 55,375.48
4. Step 4: Simplify right side
   98,404.30x = 7,519,254,797.63
5. Step 5: Solve for x
   x = 7,519,254,797.63/98,404.30
6. Step 6: Final answer
   x = 76,411.85