Finding the Fourth Proportional to 76,388,039.69, 105,418,041.01 and 42,903,419.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,388,039.69 : 105,418,041.01 = 42,903,419.49 : x
2. Step 2: Convert to fraction form
   76,388,039.69/105,418,041.01 = 42,903,419.49/x
3. Step 3: Cross multiply
   76,388,039.69x = 105,418,041.01 × 42,903,419.49
4. Step 4: Simplify right side
   76,388,039.69x = 4,522,794,435,115,937
5. Step 5: Solve for x
   x = 4,522,794,435,115,937/76,388,039.69
6. Step 6: Final answer
   x = 59,208,148.99