Finding the Fourth Proportional to 162,146.72, 243,054.72 and 91,877.60

Step by Step Solution

1. Step 1: Write the proportion equation
   162,146.72 : 243,054.72 = 91,877.60 : x
2. Step 2: Convert to fraction form
   162,146.72/243,054.72 = 91,877.60/x
3. Step 3: Cross multiply
   162,146.72x = 243,054.72 × 91,877.60
4. Step 4: Simplify right side
   162,146.72x = 22,331,284,342.27
5. Step 5: Solve for x
   x = 22,331,284,342.27/162,146.72
6. Step 6: Final answer
   x = 137,722.70