Finding the Fourth Proportional to 82,688.96, 124,048.32 and 30,172.16

Step by Step Solution

1. Step 1: Write the proportion equation
   82,688.96 : 124,048.32 = 30,172.16 : x
2. Step 2: Convert to fraction form
   82,688.96/124,048.32 = 30,172.16/x
3. Step 3: Cross multiply
   82,688.96x = 124,048.32 × 30,172.16
4. Step 4: Simplify right side
   82,688.96x = 3,742,805,758.77
5. Step 5: Solve for x
   x = 3,742,805,758.77/82,688.96
6. Step 6: Final answer
   x = 45,263.67