Finding the Fourth Proportional to 139,019,968.80, 208,604,602.80 and 58,249,101.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,019,968.80 : 208,604,602.80 = 58,249,101.60 : x
2. Step 2: Convert to fraction form
   139,019,968.80/208,604,602.80 = 58,249,101.60/x
3. Step 3: Cross multiply
   139,019,968.80x = 208,604,602.80 × 58,249,101.60
4. Step 4: Simplify right side
   139,019,968.80x = 12,151,030,702,724,846
5. Step 5: Solve for x
   x = 12,151,030,702,724,846/139,019,968.80
6. Step 6: Final answer
   x = 87,404,930.44