Finding the Fourth Proportional to 139,038.84, 191,771.69 and 91,274.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,038.84 : 191,771.69 = 91,274.76 : x
2. Step 2: Convert to fraction form
   139,038.84/191,771.69 = 91,274.76/x
3. Step 3: Cross multiply
   139,038.84x = 191,771.69 × 91,274.76
4. Step 4: Simplify right side
   139,038.84x = 17,503,914,523.17
5. Step 5: Solve for x
   x = 17,503,914,523.17/139,038.84
6. Step 6: Final answer
   x = 125,892.27