Finding the Fourth Proportional to 109,997.76, 151,799.06 and 71,781.77

Step by Step Solution

1. Step 1: Write the proportion equation
   109,997.76 : 151,799.06 = 71,781.77 : x
2. Step 2: Convert to fraction form
   109,997.76/151,799.06 = 71,781.77/x
3. Step 3: Cross multiply
   109,997.76x = 151,799.06 × 71,781.77
4. Step 4: Simplify right side
   109,997.76x = 10,896,404,093.23
5. Step 5: Solve for x
   x = 10,896,404,093.23/109,997.76
6. Step 6: Final answer
   x = 99,060.24