Finding the Fourth Proportional to 102,449.35, 141,300.60 and 90,976.33

Step by Step Solution

1. Step 1: Write the proportion equation
   102,449.35 : 141,300.60 = 90,976.33 : x
2. Step 2: Convert to fraction form
   102,449.35/141,300.60 = 90,976.33/x
3. Step 3: Cross multiply
   102,449.35x = 141,300.60 × 90,976.33
4. Step 4: Simplify right side
   102,449.35x = 12,855,009,567.19
5. Step 5: Solve for x
   x = 12,855,009,567.19/102,449.35
6. Step 6: Final answer
   x = 125,476.74