Finding the Fourth Proportional to 209,819.34, 314,787.41 and 91,501.10

Step by Step Solution

1. Step 1: Write the proportion equation
   209,819.34 : 314,787.41 = 91,501.10 : x
2. Step 2: Convert to fraction form
   209,819.34/314,787.41 = 91,501.10/x
3. Step 3: Cross multiply
   209,819.34x = 314,787.41 × 91,501.10
4. Step 4: Simplify right side
   209,819.34x = 28,803,394,281.15
5. Step 5: Solve for x
   x = 28,803,394,281.15/209,819.34
6. Step 6: Final answer
   x = 137,277.12