Finding the Fourth Proportional to 138,397,196.90, 190,984,769.61 and 76,515,944.42

Step by Step Solution

1. Step 1: Write the proportion equation
   138,397,196.90 : 190,984,769.61 = 76,515,944.42 : x
2. Step 2: Convert to fraction form
   138,397,196.90/190,984,769.61 = 76,515,944.42/x
3. Step 3: Cross multiply
   138,397,196.90x = 190,984,769.61 × 76,515,944.42
4. Step 4: Simplify right side
   138,397,196.90x = 14,613,380,016,545,266
5. Step 5: Solve for x
   x = 14,613,380,016,545,266/138,397,196.90
6. Step 6: Final answer
   x = 105,590,144.48