Finding the Fourth Proportional to 73,875.40, 103,688 and 73,875.40

Step by Step Solution

1. Step 1: Write the proportion equation
   73,875.40 : 103,688 = 73,875.40 : x
2. Step 2: Convert to fraction form
   73,875.40/103,688 = 73,875.40/x
3. Step 3: Cross multiply
   73,875.40x = 103,688 × 73,875.40
4. Step 4: Simplify right side
   73,875.40x = 7,659,992,475.20
5. Step 5: Solve for x
   x = 7,659,992,475.20/73,875.40
6. Step 6: Final answer
   x = 103,688