Finding the Fourth Proportional to 52,534.72, 78,629.55 and 39,987.01

Step by Step Solution

1. Step 1: Write the proportion equation
   52,534.72 : 78,629.55 = 39,987.01 : x
2. Step 2: Convert to fraction form
   52,534.72/78,629.55 = 39,987.01/x
3. Step 3: Cross multiply
   52,534.72x = 78,629.55 × 39,987.01
4. Step 4: Simplify right side
   52,534.72x = 3,144,160,602.15
5. Step 5: Solve for x
   x = 3,144,160,602.15/52,534.72
6. Step 6: Final answer
   x = 59,849.19