Finding the Fourth Proportional to 102,466.88, 153,710.56 and 31,388.69

Step by Step Solution

1. Step 1: Write the proportion equation
   102,466.88 : 153,710.56 = 31,388.69 : x
2. Step 2: Convert to fraction form
   102,466.88/153,710.56 = 31,388.69/x
3. Step 3: Cross multiply
   102,466.88x = 153,710.56 × 31,388.69
4. Step 4: Simplify right side
   102,466.88x = 4,824,773,117.57
5. Step 5: Solve for x
   x = 4,824,773,117.57/102,466.88
6. Step 6: Final answer
   x = 47,086.17