Finding the Fourth Proportional to 77,557.20, 107,069.58 and 52,196.88

Step by Step Solution

1. Step 1: Write the proportion equation
   77,557.20 : 107,069.58 = 52,196.88 : x
2. Step 2: Convert to fraction form
   77,557.20/107,069.58 = 52,196.88/x
3. Step 3: Cross multiply
   77,557.20x = 107,069.58 × 52,196.88
4. Step 4: Simplify right side
   77,557.20x = 5,588,698,018.91
5. Step 5: Solve for x
   x = 5,588,698,018.91/77,557.20
6. Step 6: Final answer
   x = 72,059.05