Finding the Fourth Proportional to 139,097.59, 191,900.34 and 90,756.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,097.59 : 191,900.34 = 90,756.38 : x
2. Step 2: Convert to fraction form
   139,097.59/191,900.34 = 90,756.38/x
3. Step 3: Cross multiply
   139,097.59x = 191,900.34 × 90,756.38
4. Step 4: Simplify right side
   139,097.59x = 17,416,180,658.92
5. Step 5: Solve for x
   x = 17,416,180,658.92/139,097.59
6. Step 6: Final answer
   x = 125,208.36