Finding the Fourth Proportional to 102,139.69, 153,280 and 35,580.37

Step by Step Solution

1. Step 1: Write the proportion equation
   102,139.69 : 153,280 = 35,580.37 : x
2. Step 2: Convert to fraction form
   102,139.69/153,280 = 35,580.37/x
3. Step 3: Cross multiply
   102,139.69x = 153,280 × 35,580.37
4. Step 4: Simplify right side
   102,139.69x = 5,453,758,347.20
5. Step 5: Solve for x
   x = 5,453,758,347.20/102,139.69
6. Step 6: Final answer
   x = 53,395.10