Finding the Fourth Proportional to 71,404.59, 107,120.42 and 28,713.32

Step by Step Solution

1. Step 1: Write the proportion equation
   71,404.59 : 107,120.42 = 28,713.32 : x
2. Step 2: Convert to fraction form
   71,404.59/107,120.42 = 28,713.32/x
3. Step 3: Cross multiply
   71,404.59x = 107,120.42 × 28,713.32
4. Step 4: Simplify right side
   71,404.59x = 3,075,782,889.71
5. Step 5: Solve for x
   x = 3,075,782,889.71/71,404.59
6. Step 6: Final answer
   x = 43,075.42