Finding the Fourth Proportional to 139,828,496.32, 209,751,151.81 and 42,785,044.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,828,496.32 : 209,751,151.81 = 42,785,044.67 : x
2. Step 2: Convert to fraction form
   139,828,496.32/209,751,151.81 = 42,785,044.67/x
3. Step 3: Cross multiply
   139,828,496.32x = 209,751,151.81 × 42,785,044.67
4. Step 4: Simplify right side
   139,828,496.32x = 8,974,212,399,250,423
5. Step 5: Solve for x
   x = 8,974,212,399,250,423/139,828,496.32
6. Step 6: Final answer
   x = 64,180,139.49