Finding the Fourth Proportional to 139,240,704.47, 208,837,890.90 and 42,173,333.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,240,704.47 : 208,837,890.90 = 42,173,333.87 : x
2. Step 2: Convert to fraction form
   139,240,704.47/208,837,890.90 = 42,173,333.87/x
3. Step 3: Cross multiply
   139,240,704.47x = 208,837,890.90 × 42,173,333.87
4. Step 4: Simplify right side
   139,240,704.47x = 8,807,390,096,588,146
5. Step 5: Solve for x
   x = 8,807,390,096,588,146/139,240,704.47
6. Step 6: Final answer
   x = 63,252,984.32