Finding the Fourth Proportional to 139,040.34, 191,773.76 and 91,276.26

Step by Step Solution

1. Step 1: Write the proportion equation
   139,040.34 : 191,773.76 = 91,276.26 : x
2. Step 2: Convert to fraction form
   139,040.34/191,773.76 = 91,276.26/x
3. Step 3: Cross multiply
   139,040.34x = 191,773.76 × 91,276.26
4. Step 4: Simplify right side
   139,040.34x = 17,504,391,122.56
5. Step 5: Solve for x
   x = 17,504,391,122.56/139,040.34
6. Step 6: Final answer
   x = 125,894.33