Finding the Fourth Proportional to 1,152,018,438.12, 1,589,788,208.13 and 623,388,096.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,018,438.12 : 1,589,788,208.13 = 623,388,096.72 : x
2. Step 2: Convert to fraction form
   1,152,018,438.12/1,589,788,208.13 = 623,388,096.72/x
3. Step 3: Cross multiply
   1,152,018,438.12x = 1,589,788,208.13 × 623,388,096.72
4. Step 4: Simplify right side
   1,152,018,438.12x = 991,055,045,254,060,032
5. Step 5: Solve for x
   x = 991,055,045,254,060,032/1,152,018,438.12
6. Step 6: Final answer
   x = 860,277,068.89