Finding the Fourth Proportional to 94,910.44, 142,365.64 and 86,990.69

Step by Step Solution

1. Step 1: Write the proportion equation
   94,910.44 : 142,365.64 = 86,990.69 : x
2. Step 2: Convert to fraction form
   94,910.44/142,365.64 = 86,990.69/x
3. Step 3: Cross multiply
   94,910.44x = 142,365.64 × 86,990.69
4. Step 4: Simplify right side
   94,910.44x = 12,384,485,255.89
5. Step 5: Solve for x
   x = 12,384,485,255.89/94,910.44
6. Step 6: Final answer
   x = 130,486.02