Finding the Fourth Proportional to 42,873,986.34, 64,307,671.72 and 13,730,875.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,873,986.34 : 64,307,671.72 = 13,730,875.90 : x
2. Step 2: Convert to fraction form
   42,873,986.34/64,307,671.72 = 13,730,875.90/x
3. Step 3: Cross multiply
   42,873,986.34x = 64,307,671.72 × 13,730,875.90
4. Step 4: Simplify right side
   42,873,986.34x = 883,000,659,610,163.25
5. Step 5: Solve for x
   x = 883,000,659,610,163.25/42,873,986.34
6. Step 6: Final answer
   x = 20,595,254.49