Finding the Fourth Proportional to 139,015.83, 191,824.68 and 98,714.91

Step by Step Solution

1. Step 1: Write the proportion equation
   139,015.83 : 191,824.68 = 98,714.91 : x
2. Step 2: Convert to fraction form
   139,015.83/191,824.68 = 98,714.91/x
3. Step 3: Cross multiply
   139,015.83x = 191,824.68 × 98,714.91
4. Step 4: Simplify right side
   139,015.83x = 18,935,956,021.98
5. Step 5: Solve for x
   x = 18,935,956,021.98/139,015.83
6. Step 6: Final answer
   x = 136,214.39