Finding the Fourth Proportional to 113,381.40, 156,483.18 and 65,636.76

Step by Step Solution

1. Step 1: Write the proportion equation
   113,381.40 : 156,483.18 = 65,636.76 : x
2. Step 2: Convert to fraction form
   113,381.40/156,483.18 = 65,636.76/x
3. Step 3: Cross multiply
   113,381.40x = 156,483.18 × 65,636.76
4. Step 4: Simplify right side
   113,381.40x = 10,271,048,929.70
5. Step 5: Solve for x
   x = 10,271,048,929.70/113,381.40
6. Step 6: Final answer
   x = 90,588.48