Finding the Fourth Proportional to 250,070.83, 374,917.59 and 81,490.49

Step by Step Solution

1. Step 1: Write the proportion equation
   250,070.83 : 374,917.59 = 81,490.49 : x
2. Step 2: Convert to fraction form
   250,070.83/374,917.59 = 81,490.49/x
3. Step 3: Cross multiply
   250,070.83x = 374,917.59 × 81,490.49
4. Step 4: Simplify right side
   250,070.83x = 30,552,218,118.72
5. Step 5: Solve for x
   x = 30,552,218,118.72/250,070.83
6. Step 6: Final answer
   x = 122,174.26