Finding the Fourth Proportional to 190,196.56, 262,472.52 and 105,319.12

Step by Step Solution

1. Step 1: Write the proportion equation
   190,196.56 : 262,472.52 = 105,319.12 : x
2. Step 2: Convert to fraction form
   190,196.56/262,472.52 = 105,319.12/x
3. Step 3: Cross multiply
   190,196.56x = 262,472.52 × 105,319.12
4. Step 4: Simplify right side
   190,196.56x = 27,643,374,830.58
5. Step 5: Solve for x
   x = 27,643,374,830.58/190,196.56
6. Step 6: Final answer
   x = 145,341.09