Finding the Fourth Proportional to 102,189.32, 153,307.04 and 31,118.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,189.32 : 153,307.04 = 31,118.31 : x
2. Step 2: Convert to fraction form
   102,189.32/153,307.04 = 31,118.31/x
3. Step 3: Cross multiply
   102,189.32x = 153,307.04 × 31,118.31
4. Step 4: Simplify right side
   102,189.32x = 4,770,655,840.31
5. Step 5: Solve for x
   x = 4,770,655,840.31/102,189.32
6. Step 6: Final answer
   x = 46,684.49