Finding the Fourth Proportional to 113,429.63, 156,532.89 and 63,140.51

Step by Step Solution

1. Step 1: Write the proportion equation
   113,429.63 : 156,532.89 = 63,140.51 : x
2. Step 2: Convert to fraction form
   113,429.63/156,532.89 = 63,140.51/x
3. Step 3: Cross multiply
   113,429.63x = 156,532.89 × 63,140.51
4. Step 4: Simplify right side
   113,429.63x = 9,883,566,506.37
5. Step 5: Solve for x
   x = 9,883,566,506.37/113,429.63
6. Step 6: Final answer
   x = 87,133.90