Finding the Fourth Proportional to 102,100.86, 153,151.33 and 31,985.62

Step by Step Solution

1. Step 1: Write the proportion equation
   102,100.86 : 153,151.33 = 31,985.62 : x
2. Step 2: Convert to fraction form
   102,100.86/153,151.33 = 31,985.62/x
3. Step 3: Cross multiply
   102,100.86x = 153,151.33 × 31,985.62
4. Step 4: Simplify right side
   102,100.86x = 4,898,640,243.87
5. Step 5: Solve for x
   x = 4,898,640,243.87/102,100.86
6. Step 6: Final answer
   x = 47,978.44