Finding the Fourth Proportional to 81,287.07, 112,138.72 and 52,615.93

Step by Step Solution

1. Step 1: Write the proportion equation
   81,287.07 : 112,138.72 = 52,615.93 : x
2. Step 2: Convert to fraction form
   81,287.07/112,138.72 = 52,615.93/x
3. Step 3: Cross multiply
   81,287.07x = 112,138.72 × 52,615.93
4. Step 4: Simplify right side
   81,287.07x = 5,900,283,041.81
5. Step 5: Solve for x
   x = 5,900,283,041.81/81,287.07
6. Step 6: Final answer
   x = 72,585.75