Finding the Fourth Proportional to 113,139.06, 156,096.72 and 65,374.98

Step by Step Solution

1. Step 1: Write the proportion equation
   113,139.06 : 156,096.72 = 65,374.98 : x
2. Step 2: Convert to fraction form
   113,139.06/156,096.72 = 65,374.98/x
3. Step 3: Cross multiply
   113,139.06x = 156,096.72 × 65,374.98
4. Step 4: Simplify right side
   113,139.06x = 10,204,819,948.07
5. Step 5: Solve for x
   x = 10,204,819,948.07/113,139.06
6. Step 6: Final answer
   x = 90,197.14