Finding the Fourth Proportional to 139,784.16, 209,630.88 and 60,875.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,784.16 : 209,630.88 = 60,875.04 : x
2. Step 2: Convert to fraction form
   139,784.16/209,630.88 = 60,875.04/x
3. Step 3: Cross multiply
   139,784.16x = 209,630.88 × 60,875.04
4. Step 4: Simplify right side
   139,784.16x = 12,761,288,205.24
5. Step 5: Solve for x
   x = 12,761,288,205.24/139,784.16
6. Step 6: Final answer
   x = 91,292.81