Finding the Fourth Proportional to 122,142.17, 182,013.76 and 118,128.62

Step by Step Solution

1. Step 1: Write the proportion equation
   122,142.17 : 182,013.76 = 118,128.62 : x
2. Step 2: Convert to fraction form
   122,142.17/182,013.76 = 118,128.62/x
3. Step 3: Cross multiply
   122,142.17x = 182,013.76 × 118,128.62
4. Step 4: Simplify right side
   122,142.17x = 21,501,034,289.81
5. Step 5: Solve for x
   x = 21,501,034,289.81/122,142.17
6. Step 6: Final answer
   x = 176,032.85