Finding the Fourth Proportional to 100,788,681.50, 139,014,115.59 and 76,009,911.38

Step by Step Solution

1. Step 1: Write the proportion equation
   100,788,681.50 : 139,014,115.59 = 76,009,911.38 : x
2. Step 2: Convert to fraction form
   100,788,681.50/139,014,115.59 = 76,009,911.38/x
3. Step 3: Cross multiply
   100,788,681.50x = 139,014,115.59 × 76,009,911.38
4. Step 4: Simplify right side
   100,788,681.50x = 10,566,450,606,564,976
5. Step 5: Solve for x
   x = 10,566,450,606,564,976/100,788,681.50
6. Step 6: Final answer
   x = 104,837,670.75