Finding the Fourth Proportional to 102,189.69, 153,307.60 and 31,118.69

Step by Step Solution

1. Step 1: Write the proportion equation
   102,189.69 : 153,307.60 = 31,118.69 : x
2. Step 2: Convert to fraction form
   102,189.69/153,307.60 = 31,118.69/x
3. Step 3: Cross multiply
   102,189.69x = 153,307.60 × 31,118.69
4. Step 4: Simplify right side
   102,189.69x = 4,770,730,834.71
5. Step 5: Solve for x
   x = 4,770,730,834.71/102,189.69
6. Step 6: Final answer
   x = 46,685.05