Finding the Fourth Proportional to 103,404.10, 155,106.15 and 103,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,404.10 : 155,106.15 = 103,404.10 : x
2. Step 2: Convert to fraction form
   103,404.10/155,106.15 = 103,404.10/x
3. Step 3: Cross multiply
   103,404.10x = 155,106.15 × 103,404.10
4. Step 4: Simplify right side
   103,404.10x = 16,038,611,845.22
5. Step 5: Solve for x
   x = 16,038,611,845.22/103,404.10
6. Step 6: Final answer
   x = 155,106.15