Finding the Fourth Proportional to 129,993.86, 194,861.61 and 90,467.93

Step by Step Solution

1. Step 1: Write the proportion equation
   129,993.86 : 194,861.61 = 90,467.93 : x
2. Step 2: Convert to fraction form
   129,993.86/194,861.61 = 90,467.93/x
3. Step 3: Cross multiply
   129,993.86x = 194,861.61 × 90,467.93
4. Step 4: Simplify right side
   129,993.86x = 17,628,726,493.17
5. Step 5: Solve for x
   x = 17,628,726,493.17/129,993.86
6. Step 6: Final answer
   x = 135,611.99