Finding the Fourth Proportional to 115,308.82, 173,019.73 and 77,381.99

Step by Step Solution

1. Step 1: Write the proportion equation
   115,308.82 : 173,019.73 = 77,381.99 : x
2. Step 2: Convert to fraction form
   115,308.82/173,019.73 = 77,381.99/x
3. Step 3: Cross multiply
   115,308.82x = 173,019.73 × 77,381.99
4. Step 4: Simplify right side
   115,308.82x = 13,388,611,016.66
5. Step 5: Solve for x
   x = 13,388,611,016.66/115,308.82
6. Step 6: Final answer
   x = 116,110.90