Finding the Fourth Proportional to 139,803,642.01, 209,671,820.88 and 42,760,187.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,803,642.01 : 209,671,820.88 = 42,760,187.47 : x
2. Step 2: Convert to fraction form
   139,803,642.01/209,671,820.88 = 42,760,187.47/x
3. Step 3: Cross multiply
   139,803,642.01x = 209,671,820.88 × 42,760,187.47
4. Step 4: Simplify right side
   139,803,642.01x = 8,965,606,368,005,060
5. Step 5: Solve for x
   x = 8,965,606,368,005,060/139,803,642.01
6. Step 6: Final answer
   x = 64,129,991.46