Finding the Fourth Proportional to 99,400,128.73, 149,050,299.52 and 57,914,433.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,400,128.73 : 149,050,299.52 = 57,914,433.25 : x
2. Step 2: Convert to fraction form
   99,400,128.73/149,050,299.52 = 57,914,433.25/x
3. Step 3: Cross multiply
   99,400,128.73x = 149,050,299.52 × 57,914,433.25
4. Step 4: Simplify right side
   99,400,128.73x = 8,632,163,622,443,548
5. Step 5: Solve for x
   x = 8,632,163,622,443,548/99,400,128.73
6. Step 6: Final answer
   x = 86,842,579.91