Finding the Fourth Proportional to 139,360.31, 192,317.42 and 75,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,360.31 : 192,317.42 = 75,698.12 : x
2. Step 2: Convert to fraction form
   139,360.31/192,317.42 = 75,698.12/x
3. Step 3: Cross multiply
   139,360.31x = 192,317.42 × 75,698.12
4. Step 4: Simplify right side
   139,360.31x = 14,558,066,758.76
5. Step 5: Solve for x
   x = 14,558,066,758.76/139,360.31
6. Step 6: Final answer
   x = 104,463.51