Finding the Fourth Proportional to 139,820.72, 193,066.52 and 113,983.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,820.72 : 193,066.52 = 113,983.43 : x
2. Step 2: Convert to fraction form
   139,820.72/193,066.52 = 113,983.43/x
3. Step 3: Cross multiply
   139,820.72x = 193,066.52 × 113,983.43
4. Step 4: Simplify right side
   139,820.72x = 22,006,382,632.51
5. Step 5: Solve for x
   x = 22,006,382,632.51/139,820.72
6. Step 6: Final answer
   x = 157,390.00