Finding the Fourth Proportional to 142,155,761.27, 196,141,208.41 and 86,400,208.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,155,761.27 : 196,141,208.41 = 86,400,208.31 : x
2. Step 2: Convert to fraction form
   142,155,761.27/196,141,208.41 = 86,400,208.31/x
3. Step 3: Cross multiply
   142,155,761.27x = 196,141,208.41 × 86,400,208.31
4. Step 4: Simplify right side
   142,155,761.27x = 16,946,641,264,799,124
5. Step 5: Solve for x
   x = 16,946,641,264,799,124/142,155,761.27
6. Step 6: Final answer
   x = 119,211,779.48