Finding the Fourth Proportional to 90,710.14, 136,077.52 and 31,538.15

Step by Step Solution

1. Step 1: Write the proportion equation
   90,710.14 : 136,077.52 = 31,538.15 : x
2. Step 2: Convert to fraction form
   90,710.14/136,077.52 = 31,538.15/x
3. Step 3: Cross multiply
   90,710.14x = 136,077.52 × 31,538.15
4. Step 4: Simplify right side
   90,710.14x = 4,291,633,237.39
5. Step 5: Solve for x
   x = 4,291,633,237.39/90,710.14
6. Step 6: Final answer
   x = 47,311.51