Finding the Fourth Proportional to 1,140,943,124.41, 1,574,500,317.55 and 639,155,440.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,943,124.41 : 1,574,500,317.55 = 639,155,440.23 : x
2. Step 2: Convert to fraction form
   1,140,943,124.41/1,574,500,317.55 = 639,155,440.23/x
3. Step 3: Cross multiply
   1,140,943,124.41x = 1,574,500,317.55 × 639,155,440.23
4. Step 4: Simplify right side
   1,140,943,124.41x = 1,006,350,443,609,881,216
5. Step 5: Solve for x
   x = 1,006,350,443,609,881,216/1,140,943,124.41
6. Step 6: Final answer
   x = 882,033,838.56