Finding the Fourth Proportional to 123,782.04, 170,792.93 and 72,776.16

Step by Step Solution

1. Step 1: Write the proportion equation
   123,782.04 : 170,792.93 = 72,776.16 : x
2. Step 2: Convert to fraction form
   123,782.04/170,792.93 = 72,776.16/x
3. Step 3: Cross multiply
   123,782.04x = 170,792.93 × 72,776.16
4. Step 4: Simplify right side
   123,782.04x = 12,429,653,782.49
5. Step 5: Solve for x
   x = 12,429,653,782.49/123,782.04
6. Step 6: Final answer
   x = 100,415.65