Finding the Fourth Proportional to 139,434.12, 209,113.83 and 60,529.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,434.12 : 209,113.83 = 60,529.59 : x
2. Step 2: Convert to fraction form
   139,434.12/209,113.83 = 60,529.59/x
3. Step 3: Cross multiply
   139,434.12x = 209,113.83 × 60,529.59
4. Step 4: Simplify right side
   139,434.12x = 12,657,574,393.23
5. Step 5: Solve for x
   x = 12,657,574,393.23/139,434.12
6. Step 6: Final answer
   x = 90,778.17