Finding the Fourth Proportional to 139,577.32, 209,332.86 and 49,612.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,577.32 : 209,332.86 = 49,612.60 : x
2. Step 2: Convert to fraction form
   139,577.32/209,332.86 = 49,612.60/x
3. Step 3: Cross multiply
   139,577.32x = 209,332.86 × 49,612.60
4. Step 4: Simplify right side
   139,577.32x = 10,385,547,450.04
5. Step 5: Solve for x
   x = 10,385,547,450.04/139,577.32
6. Step 6: Final answer
   x = 74,407.13