Finding the Fourth Proportional to 76,939,622.89, 106,173,490.64 and 42,131,713.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76,939,622.89 : 106,173,490.64 = 42,131,713.61 : x
2. Step 2: Convert to fraction form
   76,939,622.89/106,173,490.64 = 42,131,713.61/x
3. Step 3: Cross multiply
   76,939,622.89x = 106,173,490.64 × 42,131,713.61
4. Step 4: Simplify right side
   76,939,622.89x = 4,473,271,100,673,270.50
5. Step 5: Solve for x
   x = 4,473,271,100,673,270.50/76,939,622.89
6. Step 6: Final answer
   x = 58,140,018.53