Finding the Fourth Proportional to 142,665,656.26, 196,878,634.18 and 86,911,073.74

Step by Step Solution

1. Step 1: Write the proportion equation
   142,665,656.26 : 196,878,634.18 = 86,911,073.74 : x
2. Step 2: Convert to fraction form
   142,665,656.26/196,878,634.18 = 86,911,073.74/x
3. Step 3: Cross multiply
   142,665,656.26x = 196,878,634.18 × 86,911,073.74
4. Step 4: Simplify right side
   142,665,656.26x = 17,110,933,493,048,464
5. Step 5: Solve for x
   x = 17,110,933,493,048,464/142,665,656.26
6. Step 6: Final answer
   x = 119,937,299.15