Finding the Fourth Proportional to 107,109.78, 147,808.98 and 61,787.88

Step by Step Solution

1. Step 1: Write the proportion equation
   107,109.78 : 147,808.98 = 61,787.88 : x
2. Step 2: Convert to fraction form
   107,109.78/147,808.98 = 61,787.88/x
3. Step 3: Cross multiply
   107,109.78x = 147,808.98 × 61,787.88
4. Step 4: Simplify right side
   107,109.78x = 9,132,803,519.16
5. Step 5: Solve for x
   x = 9,132,803,519.16/107,109.78
6. Step 6: Final answer
   x = 85,265.82