Finding the Fourth Proportional to 191,857.30, 287,621.86 and 73,613.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,857.30 : 287,621.86 = 73,613.50 : x
2. Step 2: Convert to fraction form
   191,857.30/287,621.86 = 73,613.50/x
3. Step 3: Cross multiply
   191,857.30x = 287,621.86 × 73,613.50
4. Step 4: Simplify right side
   191,857.30x = 21,172,851,791.11
5. Step 5: Solve for x
   x = 21,172,851,791.11/191,857.30
6. Step 6: Final answer
   x = 110,357.29