Finding the Fourth Proportional to 77,588.72, 107,064.12 and 52,089.92

Step by Step Solution

1. Step 1: Write the proportion equation
   77,588.72 : 107,064.12 = 52,089.92 : x
2. Step 2: Convert to fraction form
   77,588.72/107,064.12 = 52,089.92/x
3. Step 3: Cross multiply
   77,588.72x = 107,064.12 × 52,089.92
4. Step 4: Simplify right side
   77,588.72x = 5,576,961,445.67
5. Step 5: Solve for x
   x = 5,576,961,445.67/77,588.72
6. Step 6: Final answer
   x = 71,878.51