Finding the Fourth Proportional to 139,085.10, 208,627.65 and 69,101.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,085.10 : 208,627.65 = 69,101.10 : x
2. Step 2: Convert to fraction form
   139,085.10/208,627.65 = 69,101.10/x
3. Step 3: Cross multiply
   139,085.10x = 208,627.65 × 69,101.10
4. Step 4: Simplify right side
   139,085.10x = 14,416,400,105.42
5. Step 5: Solve for x
   x = 14,416,400,105.42/139,085.10
6. Step 6: Final answer
   x = 103,651.65