Finding the Fourth Proportional to 429,837,903.57, 644,756,461.47 and 134,735,146.05

Step by Step Solution

1. Step 1: Write the proportion equation
   429,837,903.57 : 644,756,461.47 = 134,735,146.05 : x
2. Step 2: Convert to fraction form
   429,837,903.57/644,756,461.47 = 134,735,146.05/x
3. Step 3: Cross multiply
   429,837,903.57x = 644,756,461.47 × 134,735,146.05
4. Step 4: Simplify right side
   429,837,903.57x = 86,871,356,002,841,664
5. Step 5: Solve for x
   x = 86,871,356,002,841,664/429,837,903.57
6. Step 6: Final answer
   x = 202,102,595.61