Finding the Fourth Proportional to 141,100.80, 194,718.56 and 76,570.31

Step by Step Solution

1. Step 1: Write the proportion equation
   141,100.80 : 194,718.56 = 76,570.31 : x
2. Step 2: Convert to fraction form
   141,100.80/194,718.56 = 76,570.31/x
3. Step 3: Cross multiply
   141,100.80x = 194,718.56 × 76,570.31
4. Step 4: Simplify right side
   141,100.80x = 14,909,659,145.51
5. Step 5: Solve for x
   x = 14,909,659,145.51/141,100.80
6. Step 6: Final answer
   x = 105,666.72