Finding the Fourth Proportional to 173,468.96, 259,733.63 and 90,188.00

Step by Step Solution

1. Step 1: Write the proportion equation
   173,468.96 : 259,733.63 = 90,188.00 : x
2. Step 2: Convert to fraction form
   173,468.96/259,733.63 = 90,188.00/x
3. Step 3: Cross multiply
   173,468.96x = 259,733.63 × 90,188.00
4. Step 4: Simplify right side
   173,468.96x = 23,424,854,872.83
5. Step 5: Solve for x
   x = 23,424,854,872.83/173,468.96
6. Step 6: Final answer
   x = 135,037.74