Finding the Fourth Proportional to 109,997.91, 151,799.27 and 71,781.91

Step by Step Solution

1. Step 1: Write the proportion equation
   109,997.91 : 151,799.27 = 71,781.91 : x
2. Step 2: Convert to fraction form
   109,997.91/151,799.27 = 71,781.91/x
3. Step 3: Cross multiply
   109,997.91x = 151,799.27 × 71,781.91
4. Step 4: Simplify right side
   109,997.91x = 10,896,441,537.21
5. Step 5: Solve for x
   x = 10,896,441,537.21/109,997.91
6. Step 6: Final answer
   x = 99,060.44