Finding the Fourth Proportional to 135,162.50, 186,516.72 and 74,729.62

Step by Step Solution

1. Step 1: Write the proportion equation
   135,162.50 : 186,516.72 = 74,729.62 : x
2. Step 2: Convert to fraction form
   135,162.50/186,516.72 = 74,729.62/x
3. Step 3: Cross multiply
   135,162.50x = 186,516.72 × 74,729.62
4. Step 4: Simplify right side
   135,162.50x = 13,938,323,142.95
5. Step 5: Solve for x
   x = 13,938,323,142.95/135,162.50
6. Step 6: Final answer
   x = 103,122.71