Finding the Fourth Proportional to 131,428.89, 181,371.69 and 74,840.27

Step by Step Solution

1. Step 1: Write the proportion equation
   131,428.89 : 181,371.69 = 74,840.27 : x
2. Step 2: Convert to fraction form
   131,428.89/181,371.69 = 74,840.27/x
3. Step 3: Cross multiply
   131,428.89x = 181,371.69 × 74,840.27
4. Step 4: Simplify right side
   131,428.89x = 13,573,905,343.10
5. Step 5: Solve for x
   x = 13,573,905,343.10/131,428.89
6. Step 6: Final answer
   x = 103,279.46