Finding the Fourth Proportional to 55,364.94, 76,407.72 and 31,499.30

Step by Step Solution

1. Step 1: Write the proportion equation
   55,364.94 : 76,407.72 = 31,499.30 : x
2. Step 2: Convert to fraction form
   55,364.94/76,407.72 = 31,499.30/x
3. Step 3: Cross multiply
   55,364.94x = 76,407.72 × 31,499.30
4. Step 4: Simplify right side
   55,364.94x = 2,406,789,694.60
5. Step 5: Solve for x
   x = 2,406,789,694.60/55,364.94
6. Step 6: Final answer
   x = 43,471.37