Finding the Fourth Proportional to 91,801.08, 137,670.42 and 31,815.58

Step by Step Solution

1. Step 1: Write the proportion equation
   91,801.08 : 137,670.42 = 31,815.58 : x
2. Step 2: Convert to fraction form
   91,801.08/137,670.42 = 31,815.58/x
3. Step 3: Cross multiply
   91,801.08x = 137,670.42 × 31,815.58
4. Step 4: Simplify right side
   91,801.08x = 4,380,064,261.14
5. Step 5: Solve for x
   x = 4,380,064,261.14/91,801.08
6. Step 6: Final answer
   x = 47,712.56