Finding the Fourth Proportional to 139,479.39, 209,091.51 and 60,565.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,479.39 : 209,091.51 = 60,565.14 : x
2. Step 2: Convert to fraction form
   139,479.39/209,091.51 = 60,565.14/x
3. Step 3: Cross multiply
   139,479.39x = 209,091.51 × 60,565.14
4. Step 4: Simplify right side
   139,479.39x = 12,663,656,575.96
5. Step 5: Solve for x
   x = 12,663,656,575.96/139,479.39
6. Step 6: Final answer
   x = 90,792.31