Finding the Fourth Proportional to 109,542.58, 151,031.79 and 91,419.37

Step by Step Solution

1. Step 1: Write the proportion equation
   109,542.58 : 151,031.79 = 91,419.37 : x
2. Step 2: Convert to fraction form
   109,542.58/151,031.79 = 91,419.37/x
3. Step 3: Cross multiply
   109,542.58x = 151,031.79 × 91,419.37
4. Step 4: Simplify right side
   109,542.58x = 13,807,231,091.77
5. Step 5: Solve for x
   x = 13,807,231,091.77/109,542.58
6. Step 6: Final answer
   x = 126,044.42