Finding the Fourth Proportional to 96,381, 133,019.78 and 55,537.18

Step by Step Solution

1. Step 1: Write the proportion equation
   96,381 : 133,019.78 = 55,537.18 : x
2. Step 2: Convert to fraction form
   96,381/133,019.78 = 55,537.18/x
3. Step 3: Cross multiply
   96,381x = 133,019.78 × 55,537.18
4. Step 4: Simplify right side
   96,381x = 7,387,543,465.42
5. Step 5: Solve for x
   x = 7,387,543,465.42/96,381
6. Step 6: Final answer
   x = 76,649.38