Finding the Fourth Proportional to 137,404.10, 206,106.15 and 137,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,404.10 : 206,106.15 = 137,404.10 : x
2. Step 2: Convert to fraction form
   137,404.10/206,106.15 = 137,404.10/x
3. Step 3: Cross multiply
   137,404.10x = 206,106.15 × 137,404.10
4. Step 4: Simplify right side
   137,404.10x = 28,319,830,045.22
5. Step 5: Solve for x
   x = 28,319,830,045.22/137,404.10
6. Step 6: Final answer
   x = 206,106.15