Finding the Fourth Proportional to 112,384.26, 155,090.16 and 64,636.38

Step by Step Solution

1. Step 1: Write the proportion equation
   112,384.26 : 155,090.16 = 64,636.38 : x
2. Step 2: Convert to fraction form
   112,384.26/155,090.16 = 64,636.38/x
3. Step 3: Cross multiply
   112,384.26x = 155,090.16 × 64,636.38
4. Step 4: Simplify right side
   112,384.26x = 10,024,466,516.02
5. Step 5: Solve for x
   x = 10,024,466,516.02/112,384.26
6. Step 6: Final answer
   x = 89,198.14