Finding the Fourth Proportional to 139,602.34, 209,366.52 and 60,698.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,602.34 : 209,366.52 = 60,698.62 : x
2. Step 2: Convert to fraction form
   139,602.34/209,366.52 = 60,698.62/x
3. Step 3: Cross multiply
   139,602.34x = 209,366.52 × 60,698.62
4. Step 4: Simplify right side
   139,602.34x = 12,708,258,838.20
5. Step 5: Solve for x
   x = 12,708,258,838.20/139,602.34
6. Step 6: Final answer
   x = 91,031.85