Finding the Fourth Proportional to 102,106.58, 153,164.18 and 31,986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,106.58 : 153,164.18 = 31,986.50 : x
2. Step 2: Convert to fraction form
   102,106.58/153,164.18 = 31,986.50/x
3. Step 3: Cross multiply
   102,106.58x = 153,164.18 × 31,986.50
4. Step 4: Simplify right side
   102,106.58x = 4,899,185,357.72
5. Step 5: Solve for x
   x = 4,899,185,357.72/102,106.58
6. Step 6: Final answer
   x = 47,981.10