Finding the Fourth Proportional to 58,728.42, 81,045.27 and 31,870.93

Step by Step Solution

1. Step 1: Write the proportion equation
   58,728.42 : 81,045.27 = 31,870.93 : x
2. Step 2: Convert to fraction form
   58,728.42/81,045.27 = 31,870.93/x
3. Step 3: Cross multiply
   58,728.42x = 81,045.27 × 31,870.93
4. Step 4: Simplify right side
   58,728.42x = 2,582,988,127.00
5. Step 5: Solve for x
   x = 2,582,988,127.00/58,728.42
6. Step 6: Final answer
   x = 43,981.91