Finding the Fourth Proportional to 139,713.19, 209,404.75 and 59,727.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,713.19 : 209,404.75 = 59,727.76 : x
2. Step 2: Convert to fraction form
   139,713.19/209,404.75 = 59,727.76/x
3. Step 3: Cross multiply
   139,713.19x = 209,404.75 × 59,727.76
4. Step 4: Simplify right side
   139,713.19x = 12,507,275,454.52
5. Step 5: Solve for x
   x = 12,507,275,454.52/139,713.19
6. Step 6: Final answer
   x = 89,521.08