Finding the Fourth Proportional to 72,300.44, 99,775.10 and 42,103.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,300.44 : 99,775.10 = 42,103.36 : x
2. Step 2: Convert to fraction form
   72,300.44/99,775.10 = 42,103.36/x
3. Step 3: Cross multiply
   72,300.44x = 99,775.10 × 42,103.36
4. Step 4: Simplify right side
   72,300.44x = 4,200,866,954.34
5. Step 5: Solve for x
   x = 4,200,866,954.34/72,300.44
6. Step 6: Final answer
   x = 58,102.92