Finding the Fourth Proportional to 42,948,994.86, 64,415,177.74 and 16,687,785.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,948,994.86 : 64,415,177.74 = 16,687,785.57 : x
2. Step 2: Convert to fraction form
   42,948,994.86/64,415,177.74 = 16,687,785.57/x
3. Step 3: Cross multiply
   42,948,994.86x = 64,415,177.74 × 16,687,785.57
4. Step 4: Simplify right side
   42,948,994.86x = 1,074,946,673,495,118.25
5. Step 5: Solve for x
   x = 1,074,946,673,495,118.25/42,948,994.86
6. Step 6: Final answer
   x = 25,028,447.74