Finding the Fourth Proportional to 131,518.78, 181,495.56 and 74,930.56

Step by Step Solution

1. Step 1: Write the proportion equation
   131,518.78 : 181,495.56 = 74,930.56 : x
2. Step 2: Convert to fraction form
   131,518.78/181,495.56 = 74,930.56/x
3. Step 3: Cross multiply
   131,518.78x = 181,495.56 × 74,930.56
4. Step 4: Simplify right side
   131,518.78x = 13,599,563,948.31
5. Step 5: Solve for x
   x = 13,599,563,948.31/131,518.78
6. Step 6: Final answer
   x = 103,403.97