Finding the Fourth Proportional to 58,012.84, 86,830.98 and 31,321.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,012.84 : 86,830.98 = 31,321.72 : x
2. Step 2: Convert to fraction form
   58,012.84/86,830.98 = 31,321.72/x
3. Step 3: Cross multiply
   58,012.84x = 86,830.98 × 31,321.72
4. Step 4: Simplify right side
   58,012.84x = 2,719,695,642.89
5. Step 5: Solve for x
   x = 2,719,695,642.89/58,012.84
6. Step 6: Final answer
   x = 46,880.93