Finding the Fourth Proportional to 105,036.50, 145,071.29 and 76,483.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,036.50 : 145,071.29 = 76,483.82 : x
2. Step 2: Convert to fraction form
   105,036.50/145,071.29 = 76,483.82/x
3. Step 3: Cross multiply
   105,036.50x = 145,071.29 × 76,483.82
4. Step 4: Simplify right side
   105,036.50x = 11,095,606,431.53
5. Step 5: Solve for x
   x = 11,095,606,431.53/105,036.50
6. Step 6: Final answer
   x = 105,635.72