Finding the Fourth Proportional to 139,828,494.99, 209,751,149.82 and 42,785,043.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,828,494.99 : 209,751,149.82 = 42,785,043.34 : x
2. Step 2: Convert to fraction form
   139,828,494.99/209,751,149.82 = 42,785,043.34/x
3. Step 3: Cross multiply
   139,828,494.99x = 209,751,149.82 × 42,785,043.34
4. Step 4: Simplify right side
   139,828,494.99x = 8,974,212,034,862,400
5. Step 5: Solve for x
   x = 8,974,212,034,862,400/139,828,494.99
6. Step 6: Final answer
   x = 64,180,137.50