Finding the Fourth Proportional to 42,710,999.58, 64,089,822.42 and 18,115,100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   42,710,999.58 : 64,089,822.42 = 18,115,100.55 : x
2. Step 2: Convert to fraction form
   42,710,999.58/64,089,822.42 = 18,115,100.55/x
3. Step 3: Cross multiply
   42,710,999.58x = 64,089,822.42 × 18,115,100.55
4. Step 4: Simplify right side
   42,710,999.58x = 1,160,993,577,369,944.50
5. Step 5: Solve for x
   x = 1,160,993,577,369,944.50/42,710,999.58
6. Step 6: Final answer
   x = 27,182,542.88