Finding the Fourth Proportional to 98,168.18, 147,128.76 and 53,187.83

Step by Step Solution

1. Step 1: Write the proportion equation
   98,168.18 : 147,128.76 = 53,187.83 : x
2. Step 2: Convert to fraction form
   98,168.18/147,128.76 = 53,187.83/x
3. Step 3: Cross multiply
   98,168.18x = 147,128.76 × 53,187.83
4. Step 4: Simplify right side
   98,168.18x = 7,825,458,739.35
5. Step 5: Solve for x
   x = 7,825,458,739.35/98,168.18
6. Step 6: Final answer
   x = 79,714.82