Finding the Fourth Proportional to 168,300.42, 252,079.74 and 139,117.74

Step by Step Solution

1. Step 1: Write the proportion equation
   168,300.42 : 252,079.74 = 139,117.74 : x
2. Step 2: Convert to fraction form
   168,300.42/252,079.74 = 139,117.74/x
3. Step 3: Cross multiply
   168,300.42x = 252,079.74 × 139,117.74
4. Step 4: Simplify right side
   168,300.42x = 35,068,763,728.59
5. Step 5: Solve for x
   x = 35,068,763,728.59/168,300.42
6. Step 6: Final answer
   x = 208,370.03