Finding the Fourth Proportional to 191,384.98, 264,109.16 and 105,342.10

Step by Step Solution

1. Step 1: Write the proportion equation
   191,384.98 : 264,109.16 = 105,342.10 : x
2. Step 2: Convert to fraction form
   191,384.98/264,109.16 = 105,342.10/x
3. Step 3: Cross multiply
   191,384.98x = 264,109.16 × 105,342.10
4. Step 4: Simplify right side
   191,384.98x = 27,821,813,146.72
5. Step 5: Solve for x
   x = 27,821,813,146.72/191,384.98
6. Step 6: Final answer
   x = 145,370.94