Finding the Fourth Proportional to 78,742.10, 118,113.59 and 19,577.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,742.10 : 118,113.59 = 19,577.77 : x
2. Step 2: Convert to fraction form
   78,742.10/118,113.59 = 19,577.77/x
3. Step 3: Cross multiply
   78,742.10x = 118,113.59 × 19,577.77
4. Step 4: Simplify right side
   78,742.10x = 2,312,400,698.89
5. Step 5: Solve for x
   x = 2,312,400,698.89/78,742.10
6. Step 6: Final answer
   x = 29,366.76