Finding the Fourth Proportional to 52,900.07, 72,996.77 and 31,678.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,900.07 : 72,996.77 = 31,678.79 : x
2. Step 2: Convert to fraction form
   52,900.07/72,996.77 = 31,678.79/x
3. Step 3: Cross multiply
   52,900.07x = 72,996.77 × 31,678.79
4. Step 4: Simplify right side
   52,900.07x = 2,312,449,061.72
5. Step 5: Solve for x
   x = 2,312,449,061.72/52,900.07
6. Step 6: Final answer
   x = 43,713.54