Finding the Fourth Proportional to 99,725,719.05, 149,635,949.13 and 69,067,478.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,725,719.05 : 149,635,949.13 = 69,067,478.25 : x
2. Step 2: Convert to fraction form
   99,725,719.05/149,635,949.13 = 69,067,478.25/x
3. Step 3: Cross multiply
   99,725,719.05x = 149,635,949.13 × 69,067,478.25
4. Step 4: Simplify right side
   99,725,719.05x = 10,334,977,661,954,382
5. Step 5: Solve for x
   x = 10,334,977,661,954,382/99,725,719.05
6. Step 6: Final answer
   x = 103,634,025.01