Finding the Fourth Proportional to 72,795, 109,075.50 and 61,131

Step by Step Solution

1. Step 1: Write the proportion equation
   72,795 : 109,075.50 = 61,131 : x
2. Step 2: Convert to fraction form
   72,795/109,075.50 = 61,131/x
3. Step 3: Cross multiply
   72,795x = 109,075.50 × 61,131
4. Step 4: Simplify right side
   72,795x = 6,667,894,390.50
5. Step 5: Solve for x
   x = 6,667,894,390.50/72,795
6. Step 6: Final answer
   x = 91,598.25