Finding the Fourth Proportional to 72,152,357.88, 99,570,386.40 and 39,112,504.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,152,357.88 : 99,570,386.40 = 39,112,504.80 : x
2. Step 2: Convert to fraction form
   72,152,357.88/99,570,386.40 = 39,112,504.80/x
3. Step 3: Cross multiply
   72,152,357.88x = 99,570,386.40 × 39,112,504.80
4. Step 4: Simplify right side
   72,152,357.88x = 3,894,447,216,007,854.50
5. Step 5: Solve for x
   x = 3,894,447,216,007,854.50/72,152,357.88
6. Step 6: Final answer
   x = 53,975,328.46