Finding the Fourth Proportional to 42,065,441.69, 63,091,847.21 and 13,307,840.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,065,441.69 : 63,091,847.21 = 13,307,840.51 : x
2. Step 2: Convert to fraction form
   42,065,441.69/63,091,847.21 = 13,307,840.51/x
3. Step 3: Cross multiply
   42,065,441.69x = 63,091,847.21 × 13,307,840.51
4. Step 4: Simplify right side
   42,065,441.69x = 839,616,239,769,970.12
5. Step 5: Solve for x
   x = 839,616,239,769,970.12/42,065,441.69
6. Step 6: Final answer
   x = 19,959,762.84