Finding the Fourth Proportional to 139,031.89, 191,863.57 and 75,369.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,031.89 : 191,863.57 = 75,369.69 : x
2. Step 2: Convert to fraction form
   139,031.89/191,863.57 = 75,369.69/x
3. Step 3: Cross multiply
   139,031.89x = 191,863.57 × 75,369.69
4. Step 4: Simplify right side
   139,031.89x = 14,460,697,746.09
5. Step 5: Solve for x
   x = 14,460,697,746.09/139,031.89
6. Step 6: Final answer
   x = 104,009.93